Discussion:
[gentoo-user] Thumbnail thingy generating large xorg-session.log file
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Dale
2023-12-01 11:50:01 UTC
Permalink
Howdy,

I was poking around the other day and noticed a large log file.  At
first I thought it was smplayer but it does it even when smplayer is
closed.  So, I tested several things and finally noticed it stops
generating errors when I turn off showing thumbnails in dolphin.  This
is a sample of what it enters into xorg-sessions.log file. 


[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55af3fb5c1c0] Format
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55af3fb5c1c0] moov atom not found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55af4087ade0] Format
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55af4087ade0] moov atom not found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55af408794e0] Format
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55af408794e0] moov atom not found



When I cut off thumbnails and turn it back on, I also get some messages
like this. 



[avi @ 0x55dcc9bede00] non-interleaved AVI
[avi @ 0x55dcc9bede00] non-interleaved AVI
[mpeg4 @ 0x55dcc9c00c20] Video uses a non-standard and wasteful way to
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
[avi @ 0x55dcc9bede00] non-interleaved AVI
[avi @ 0x55dcc9bede00] non-interleaved AVI
[mpeg4 @ 0x55dcc9bd76e0] Video uses a non-standard and wasteful way to
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.


I cleared the log file since it was over 1GB.  I looked around in
dolphin settings and can't figure out a way to cut those messages off. 
I'm not sure how to fix this.  If the video is broken somehow, they all
play fine on my TV.  I'm kinda thinking that something is is having
problems but I don't know how it generates thumbnails to know what that
is. 

Anyone have ideas or thoughts on this?  Is it a bug that will be fixed
soon and just give it time?  Should I threaten it with a hammer?  ROFL 

Thanks.

Dale

:-)  :-) 
Michael
2023-12-01 12:00:01 UTC
Permalink
Post by Dale
Howdy,
I was poking around the other day and noticed a large log file. At
first I thought it was smplayer but it does it even when smplayer is
closed. So, I tested several things and finally noticed it stops
generating errors when I turn off showing thumbnails in dolphin. This
is a sample of what it enters into xorg-sessions.log file.
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
When I cut off thumbnails and turn it back on, I also get some messages
like this.
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
I cleared the log file since it was over 1GB. I looked around in
dolphin settings and can't figure out a way to cut those messages off.
I'm not sure how to fix this. If the video is broken somehow, they all
play fine on my TV. I'm kinda thinking that something is is having
problems but I don't know how it generates thumbnails to know what that
is.
Anyone have ideas or thoughts on this? Is it a bug that will be fixed
soon and just give it time? Should I threaten it with a hammer? ROFL
Thanks.
Dale
:-) :-)
Is your issue related to these logs being generated, or to these logs being
captured. If the latter, then my previous response on configuring the sddm
logs should help.
Dale
2023-12-02 05:50:01 UTC
Permalink
Post by Michael
Post by Dale
Howdy,
I was poking around the other day and noticed a large log file. At
first I thought it was smplayer but it does it even when smplayer is
closed. So, I tested several things and finally noticed it stops
generating errors when I turn off showing thumbnails in dolphin. This
is a sample of what it enters into xorg-sessions.log file.
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
When I cut off thumbnails and turn it back on, I also get some messages
like this.
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
I cleared the log file since it was over 1GB. I looked around in
dolphin settings and can't figure out a way to cut those messages off.
I'm not sure how to fix this. If the video is broken somehow, they all
play fine on my TV. I'm kinda thinking that something is is having
problems but I don't know how it generates thumbnails to know what that
is.
Anyone have ideas or thoughts on this? Is it a bug that will be fixed
soon and just give it time? Should I threaten it with a hammer? ROFL
Thanks.
Dale
:-) :-)
Is your issue related to these logs being generated, or to these logs being
captured. If the latter, then my previous response on configuring the sddm
logs should help.
Replying here since the original post has the correct info.  Took me a
bit to try some of things in other reply. I had to help install two TVs
and tried to do some hunting today for a friend.  Most of the files you
mentioned aren't on this system and some paths don't exist either. 
Maybe different USE flags or something??  I dunno.  Since this is
actually dolphin, what does dolphin use to generate those thumbnails? 
Maybe I need to beat some sense into that thing.  Another thing that hit
me, I have three video packages installed, these three. 



***@fireball / # equery list mpv ffmpeg mplayer
 * Searching for mpv ...
[IP-] [  ] media-video/mpv-0.36.0-r1:0/2

 * Searching for ffmpeg ...
[IP-] [  ] media-video/ffmpeg-4.4.4-r8:0/56.58.58

 * Searching for mplayer ...
[IP-] [  ] media-video/mplayer-1.5_p20230618:0
***@fireball / #



I'm wondering, if I remove ffmpeg, could my video players use mpv or
mplayer?  Does dolphin use ffmpeg or mplayer to generate the
thumbnails?  I need to keep mpv because I use that to play videos
directly.  I think smplayer needs mplayer, maybe.    Another thought,
you see any USE flags that need to be changed?  Maybe I missed a new one
that I need to enable or something. 


***@fireball / # equery u mpv ffmpeg mplayer
[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for media-video/mpv-0.36.0-r1:
 U I
 + + X                               : Add support for X11
 + + alsa                            : Add support for
media-libs/alsa-lib (Advanced Linux Sound Architecture)
 - - archive                         : Enable support for various
archive formats via app-arch/libarchive
 + + bluray                          : Enable playback of Blu-ray
filesystems
 + + cdda                            : Add Compact Disk Digital Audio
(Standard Audio CD) support
 + + cli                             : Enable the command-line player
 - - debug                           : Enable extra debug codepaths,
like asserts and extra output. If you want to get meaningful backtraces see
                                      
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
 + + drm                             : Enable Kernel Mode Setting /
Direct Rendering Manager based video outputs
 - - dvb                             : Add support for DVB (Digital
Video Broadcasting)
 + + dvd                             : Add support for DVDs
 + + egl                             : Enable support for various
EGL-based video outputs / backends
 - - gamepad                         : Enable gamepad input support
 + + iconv                           : Enable support for the iconv
character set conversion library
 - - jack                            : Add support for the JACK Audio
Connection Kit
 + + javascript                      : Enable javascript support
 + + jpeg                            : Add JPEG image support
 + + lcms                            : Add lcms support (color
management engine)
 - - libcaca                         : Add support for colored ASCII-art
graphics
 + + libmpv                          : Enable the shared library and
headers (used by frontends / plugins)
 + + libplacebo                      : Enable support for GPU
accelerated video rendering with media-libs/libplacebo
 + + lua                             : Enable Lua scripting, OSC (On
Screen Controller) GUI, and net-misc/yt-dlp support
 - - nvenc                           : Add support for NVIDIA
Encoder/Decoder (NVENC/NVDEC) API for hardware accelerated encoding and
decoding on NVIDIA cards (requires
                                       x11-drivers/nvidia-drivers)
 - - openal                          : Add support for the Open Audio
Library
 + + opengl                          : Enable support for OpenGL-based
video backends (Note: deprecated for X11, USE=egl provides the newer
support for -gpu-api=opengl)
 + + pipewire                        : Enable sound support via native
PipeWire backend
 + + pulseaudio                      : Add sound server support via
media-libs/libpulse (may be PulseAudio or PipeWire)
 - - python_single_target_python3_10 : Build for Python 3.10 only
 + + python_single_target_python3_11 : Build for Python 3.11 only
 - - rubberband                      : Enable high quality pitch
correction via media-libs/rubberband
 + + sdl                             : Enable media-libs/libsdl2 based
video and audio outputs (Note: these outputs exist for compatibility
reasons only, avoid if
                                       possible)
 - - sixel                           : Enable support for the sixel
video backend using media-libs/libsixel
 - - sndio                           : Enable sound support via
media-sound/sndio
 - - test                            : Enable dependencies and/or
preparations necessary to run tests (usually controlled by FEATURES=test
but can be toggled
                                       independently)
 - - tools                           : Install extra tools:
mpv_identify.sh, mpv_idet.sh, and umpv
 + + uchardet                        : Enable subtitles charset
discovery via app-i18n/uchardet
 - - vaapi                           : Enable Video Acceleration API for
hardware decoding
 - - vdpau                           : Enable the Video Decode and
Presentation API for Unix acceleration interface
 + + vulkan                          : Add support for 3D graphics and
computing via the Vulkan cross-platform API
 + + wayland                         : Enable dev-libs/wayland backend
 + + xv                              : Add in optional support for the
Xvideo extension (an X API for video playback)
 - - zimg                            : Enable libzimg support (for
vf_fingerprint)
 + + zlib                            : Add support for zlib compression

 * Found these USE flags for media-video/ffmpeg-6.1:
 U I
 + + X                      : Add support for X11
 - - abi_x86_32             : 32-bit (x86) libraries
 + + alsa                   : Add support for media-libs/alsa-lib
(Advanced Linux Sound Architecture)
 - - amf                    : Enables support for AMD's Advanced Media
Framework (AMF)
 - - amr                    : Enables Adaptive Multi-Rate Audio support
 - - amrenc                 : Enables Adaptive Multi-Rate Audio encoding
support with media-libs/vo-amrwbenc.
 + + bluray                 : Enable playback of Blu-ray filesystems
 - - bs2b                   : Enables media-libs/libbs2b based Bauer
stereo-to-binaural filter.
 + + bzip2                  : Enable bzip2 compression support
 - - cdio                   : Enables audio CD grabbing with
dev-libs/libcdio.
 - - chromaprint            : Enables audio fingerprinting support with
media-libs/chromaprint.
 - - chromium               : Builds libffmpeg.so to enable media
playback in Chromium-based browsers like Opera and Vivaldi.
 - - codec2                 : Enables codec2 low bit rate speech codec
support via media-libs/codec2.
 - - cpu_flags_x86_3dnow    : Use the 3DNow! instruction set
 - - cpu_flags_x86_3dnowext : Use the Enhanced 3DNow! instruction set
 + + cpu_flags_x86_aes      : Enable support for Intel's AES instruction
set (AES-NI)
 + + cpu_flags_x86_avx      : Adds support for Advanced Vector
Extensions instructions
 - - cpu_flags_x86_avx2     : Adds support for Advanced Vector
Extensions 2 instructions
 + + cpu_flags_x86_fma3     : Use the Fused Multiply Add 3 instruction
set ([fma] in cpuinfo)
 + + cpu_flags_x86_fma4     : Use the Fused Multiply Add 4 instruction set
 + + cpu_flags_x86_mmx      : Use the MMX instruction set
 + + cpu_flags_x86_mmxext   : Use the Extended MMX instruction set (a
subset of SSE) ([mmxext] or [sse] in cpuinfo)
 + + cpu_flags_x86_sse      : Use the SSE instruction set
 + + cpu_flags_x86_sse2     : Use the SSE2 instruction set
 + + cpu_flags_x86_sse3     : Use the SSE3 instruction set ([pni] in
cpuinfo, NOT ssse3)
 + + cpu_flags_x86_sse4_1   : Enable SSE4.1 instruction support
 + + cpu_flags_x86_sse4_2   : Enable SSE4.2 instruction support
 + + cpu_flags_x86_ssse3    : Use the SSSE3 instruction set (NOT sse3/pni)
 + + cpu_flags_x86_xop      : Enable the XOP instruction set
 - - cpudetection           : Enables runtime CPU detection (useful for
bindist, compatibility on other CPUs)
 - - cuda                   : Enables CUDA-based acceleration. Mostly
used for specific filters.
 + - dav1d                  : Enables AV1 decoding via media-libs/dav1d.
 - - debug                  : Enable extra debug codepaths, like asserts
and extra output. If you want to get meaningful backtraces see
                             
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
 - - doc                    : Add extra documentation (API, Javadoc,
etc). It is recommended to enable per package instead of globally
 + + encode                 : Add support for encoding of audio or video
files
 + - fdk                    : Use external fdk-aac library for AAC encoding
 + - fftools_aviocat        : cat's a URL to another one, useful for
dumping streams.
 + - fftools_cws2fws        : converts cws files (Macromedia Flash,
compressed) to fws ones (Macromedia Flash, uncompressed).
 + - fftools_ffescape       : Escapes an input string, adopting the
av_get_token() escaping logic.
 + - fftools_ffeval         : A simple expression evalutor.
 + - fftools_ffhash         : Computes a file's digest using libavutil
algorithms.
 + - fftools_fourcc2pixfmt  : Shows the relationships between rawvideo
pixel formats and FourCC tags.
 + - fftools_graph2dot      : A tool to convert a libavfilter graph to a
dot file.
 + - fftools_ismindex       : A tool for creating smooth streaming
manifests.
 + - fftools_pktdumper      : Dumps packets as demuxed by libavformat.
 + - fftools_qt-faststart   : Rearranges a Quicktime file to facilitate
network streaming.
 + - fftools_sidxindex      : Write an MPD file for fragmented MP4 files
with a sidx index at the start of the file.
 + - fftools_trasher        : Writes burts of random data into a file.
Great for testing error robustness/resilience/concealment.
 - - flite                  : Adds a text-to-speech filter based on
app-accessibility/flite.
 + + fontconfig             : Support for configuring and customizing
font access via media-libs/fontconfig
 + + frei0r                 : Enable frei0r wrapping in libavfilter
 - - fribidi                : Enables fribidi support in the drawtext
filter.
 - - gcrypt                 : Enables gcrypt support: Needed for
rtmp(t)e support if openssl, librtmp or gmp is not used.
 - - glslang                : Use dev-util/glslang to compile GLSL
 - - gme                    : Enables support for
media-libs/game-music-emu for playing various video game music formats.
 - - gmp                    : Add support for dev-libs/gmp (GNU MP library)
 + - gnutls                 : Prefer net-libs/gnutls as SSL/TLS provider
(ineffective with USE=-ssl)
 + - gpl                    : Build GPL code. Should be enabled unless
you require LGPL binaries.
 - - gsm                    : Add support for the gsm lossy speech
compression codec
 - - hardcoded-tables       : Use pre-calculated tables rather than
calculating them on the fly. It results in an increase of approximately
15% in the size of
                              libavcodec, the main library impacted by
this change. It enables savings in table generation time, done once at
codec initialization, since
                              by hardcoding the tables, they do not need
to be computed at runtime. However, the savings are often negligible
(~100k cycles is a typical
                              number) especially when amortized over the
entire encoding/decoding operation. Improvements are being made to the
runtime initialization,
                              and so over time, this option will have an
impact on fewer and fewer codecs.
 + + iconv                  : Enable support for the iconv character set
conversion library
 - - iec61883               : Support for FireWire DV/HDV input device
using media-libs/libiec61883.
 - - ieee1394               : Enable FireWire/iLink IEEE1394 support
(dv, camera, ...)
 - - jack                   : Add support for the JACK Audio Connection Kit
 + + jpeg2k                 : Support for JPEG 2000, a wavelet-based
image compression format
 - - jpegxl                 : Add JPEG XL image support
 - - kvazaar                : Enables media-libs/kvazaar based HEVC encoder.
 - - ladspa                 : Enable the ability to support ladspa plugins
 + + lcms                   : Enable ICC profile support via
media-libs/lcms.
 - - libaom                 : Enables media-libs/libaom based AV1 codec
support.
 - - libaribb24             : Enables ARIB text and caption decoding via
media-libs/aribb24.
 + - libass                 : SRT/SSA/ASS (SubRip / SubStation Alpha)
subtitle support
 - - libcaca                : Add support for colored ASCII-art graphics
 - - libdrm                 : Enables x11-libs/libdrm support for better
screen grabbing and hardware accelerated codecs.
 - - libilbc                : Enables iLBC de/encoding via
media-libs/libilbc.
 - - libplacebo             : Adds flexible GPU-accelerated processing
filter based on media-libs/libplacebo.
 - - librtmp                : Enables Real Time Messaging Protocol using
librtmp (media-video/rtmpdump) in addition to FFmpeg's native
implementation.
 - - libsoxr                : Enables audio resampling through
media-libs/soxr.
 - - libtesseract           : Enables the OCR filter via app-text/tesseract.
 - - libv4l                 : Uses media-libs/libv4l for video4linux
instead of direct calls. Adds support for more devices via the userspace
library.
 - - libxml2                : Uses dev-libs/libxml2 to enable dash
demuxing support.
 - - lv2                    : Enables lv2 audio filter wrapper.
 + + lzma                   : Support for LZMA compression algorithm
 - - modplug                : Add libmodplug support for playing
SoundTracker-style music files
 + + mp3                    : Add support for reading mp3 files
 + - network                : Enables network streaming support
 - - nvenc                  : Add support for NVIDIA Encoder/Decoder
(NVENC/NVDEC) API for hardware accelerated encoding and decoding on
NVIDIA cards (requires
                              x11-drivers/nvidia-drivers)
 - - openal                 : Add support for the Open Audio Library
 - - opencl                 : Enable OpenCL support
 + + opengl                 : Add support for OpenGL (3D graphics)
 + - openh264               : Enables H.264 encoding suppoprt via
media-libs/openh264.
 - - openssl                : Enables dev-libs/openssl support. Adds
support for encrypted network protocols (TLS/HTTPS).
 - - opus                   : Enable Opus audio codec support
 - - oss                    : Add support for OSS (Open Sound System)
 - - pic                    : Force shared libraries to be built as PIC
(this is slower)
 + - postproc               : Build and install libpostproc.
 + + pulseaudio             : Add sound server support via
media-libs/libpulse (may be PulseAudio or PipeWire)
 - - qsv                    : Enable Intel Quick Sync Video via
media-libs/intel-mediasdk (ffmpeg versions older than, and including,
5.1) or media-libs/oneVPL (ffmpeg
                              version newer than 5.1).
 - - rav1e                  : Enables AV1 encoding support via
media-video/rav1e.
 - - rubberband             : Adds time-stretching and pitch-shifting
audio filter based on media-libs/rubberband.
 - - samba                  : Add support for SAMBA (Windows File and
Printer sharing)
 + + sdl                    : Add support for Simple Direct Layer (media
library)
 - - shaderc                : Use media-libs/shaderc to compile GLSL
 - - snappy                 : Enable app-arch/snappy support. Required
for e.g. Vidvox Hap encoder.
 - - sndio                  : Enable support for the media-sound/sndio
backend
 - - speex                  : Add support for the speex audio codec
(used for speech)
 - - srt                    : Enable support for Secure Reliable
Transport (SRT) via net-libs/srt
 - - ssh                    : Enable SSH/sftp support via net-libs/libssh.
 - - static-libs            : Build static versions of dynamic libraries
as well
 + + svg                    : Add support for SVG (Scalable Vector Graphics)
 - - svt-av1                : Enables AV1 encoding support via
media-libs/svt-av1.
 - - test                   : Enable dependencies and/or preparations
necessary to run tests (usually controlled by FEATURES=test but can be
toggled independently)
 + - theora                 : Add support for the Theora Video
Compression Codec
 + - threads                : Add threads support for various packages.
Usually pthreads
 + + truetype               : Enables drawtext filter via
media-libs/freetype and media-libs/harfbuzz.
 - - twolame                : Enables MP2 encoding via
media-sound/twolame as an alternative to the internal encoder.
 - - v4l                    : Enable support for video4linux (using
linux-headers or userspace libv4l libraries)
 - - vaapi                  : Enable Video Acceleration API for hardware
decoding
 - - vdpau                  : Enable the Video Decode and Presentation
API for Unix acceleration interface
 - - verify-sig             : Verify upstream signatures on distfiles
 - - vidstab                : Enables video stabilization filter using
vid.stab library (media-libs/vidstab).
 - - vmaf                   : Enables Netflix's perceptual video quality
assessment filter using the library (media-libs/libvmaf).
 + + vorbis                 : Add support for the OggVorbis audio codec
 + - vpx                    : Enables VP8 and VP9 codec support using
libvpx: Decoding does not require this to be enabled but libvpx can also
be used for decoding;
                              encoding requires this useflag to be
enabled though.
 + + vulkan                 : Add support for 3D graphics and computing
via the Vulkan cross-platform API
 + + webp                   : Add support for the WebP image format
 + + x264                   : Enable h264 encoding using x264
 + + x265                   : Enables HEVC encoding with media-libs/x265.
 + + xvid                   : Add support for xvid.org's open-source
mpeg-4 codec
 - - zeromq                 : Enables net-libs/zeromq support with the
zmq/azmq filters.
 - - zimg                   : Enables media-libs/zimg based scale filter.
 + + zlib                   : Add support for zlib compression
 - - zvbi                   : Enables media-libs/zvbi based teletext
decoder.

 * Found these USE flags for media-video/mplayer-1.5_p20230618:
 U I
 + + X                      : Add support for X11
 + + a52                    : Enable support for decoding ATSC A/52
streams used in DVD
 - - aalib                  : Add support for media-libs/aalib
(ASCII-Graphics Library)
 + + alsa                   : Add support for media-libs/alsa-lib
(Advanced Linux Sound Architecture)
 + + bidi                   : Enable bidirectional language support
 - - bl                     : Blinkenlights video output
 + + bluray                 : Enable playback of Blu-ray filesystems
 - - bs2b                   : Enable Bauer stereophonic-to-binaural
headphone filter
 + + cddb                   : Access cddb servers to retrieve and submit
information about compact disks
 + + cdio                   : Use libcdio for CD support (instead of
cdparanoia)
 + + cdparanoia             : Enable cdparanoia (audio CD ripper) support
 - - cpu_flags_x86_3dnow    : Use the 3DNow! instruction set
 - - cpu_flags_x86_3dnowext : Use the Enhanced 3DNow! instruction set
 + + cpu_flags_x86_avx      : Adds support for Advanced Vector
Extensions instructions
 - - cpu_flags_x86_avx2     : Adds support for Advanced Vector
Extensions 2 instructions
 + + cpu_flags_x86_fma3     : Use the Fused Multiply Add 3 instruction
set ([fma] in cpuinfo)
 + + cpu_flags_x86_fma4     : Use the Fused Multiply Add 4 instruction set
 + + cpu_flags_x86_mmx      : Use the MMX instruction set
 + + cpu_flags_x86_mmxext   : Use the Extended MMX instruction set (a
subset of SSE) ([mmxext] or [sse] in cpuinfo)
 + + cpu_flags_x86_sse      : Use the SSE instruction set
 + + cpu_flags_x86_sse2     : Use the SSE2 instruction set
 + + cpu_flags_x86_sse3     : Use the SSE3 instruction set ([pni] in
cpuinfo, NOT ssse3)
 + + cpu_flags_x86_sse4_1   : Enable SSE4.1 instruction support
 + + cpu_flags_x86_sse4_2   : Enable SSE4.2 instruction support
 + + cpu_flags_x86_ssse3    : Use the SSSE3 instruction set (NOT sse3/pni)
 + + cpu_flags_x86_xop      : Enable the XOP instruction set
 - - cpudetection           : Enables runtime CPU detection (useful for
binpkgs, compatibility on other CPUs)
 - - debug                  : Enable extra debug codepaths, like asserts
and extra output. If you want to get meaningful backtraces see
                             
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
 - - dga                    : Add DGA (Direct Graphic Access) support for X
 - - doc                    : Add extra documentation (API, Javadoc,
etc). It is recommended to enable per package instead of globally
 - - dts                    : Enable DTS Coherent Acoustics decoder support
 - - dv                     : Enable support for a codec used by many
camcorders
 - - dvb                    : Add support for DVB (Digital Video
Broadcasting)
 + + dvd                    : Add support for DVDs
 + + dvdnav                 : Use forked libdvdnav, navigate menus in GUIs
 + + enca                   : Enables support for charset discovery and
conversion
 + + encode                 : Add support for encoding of audio or video
files
 + + faac                   : Use external faac library for AAC encoding
 - - faad                   : Use external faad library for AAC decoding
 - - fbcon                  : Add framebuffer support for the console,
via the kernel
 - - ftp                    : Add FTP (File Transfer Protocol) support
 - - ggi                    : Add support for media-libs/libggi (non-X
video api/drivers)
 - - gsm                    : Add support for the gsm lossy speech
compression codec
 + + iconv                  : Enable support for the iconv character set
conversion library
 + + ipv6                   : Add support for IP version 6
 - - jack                   : Add support for the JACK Audio Connection Kit
 - - joystick               : Add support for joysticks in all packages
 + + jpeg                   : Add JPEG image support
 - - ladspa                 : Enable the ability to support ladspa plugins
 + + libass                 : SRT/SSA/ASS (SubRip / SubStation Alpha)
subtitle support
 - - libcaca                : Add support for colored ASCII-art graphics
 - - libmpeg2               : Build support for mpeg2 over
media-libs/libmpeg2 rather than using ffmpeg.
 - - lirc                   : Add support for lirc (Linux's Infra-Red
Remote Control)
 - - live                   : Enables live.com streaming media support
 - - lzo                    : Enable support for lzo compression
 + + mad                    : Add support for mad (high-quality mp3
decoder library and cli frontend)
 - - md5sum                 : Enables md5sum video output
 + + mng                    : MNG input support
 + + mp3                    : Add support for reading mp3 files
 - - nas                    : Add support for network audio sound
 + + network                : Enables network streaming support
 - - openal                 : Add support for the Open Audio Library
 + + opengl                 : Add support for OpenGL (3D graphics)
 + + osdmenu                : Enables support for on-screen display
(OSD) menus
 - - oss                    : Add support for OSS (Open Sound System)
 + + png                    : Add support for libpng (PNG images)
 - - pnm                    : Add PNM video output option, to create
PPM/PGM/PGMYUV images
 + + pulseaudio             : Add sound server support via
media-libs/libpulse (may be PulseAudio or PipeWire)
 - - pvr                    : Enable Video4Linux2 MPEG PVR
 - - radio                  : Enable V4L2 radio interface and support
 + + rar                    : Enable Unique RAR File Library
 - - rtc                    : Enables usage of the linux real time
clock. The alternative is software emulation of rtc
 - - rtmp                   : Enables RTMPDump Streaming Media support
 - - samba                  : Add support for SAMBA (Windows File and
Printer sharing)
 + + sdl                    : Add support for Simple Direct Layer (media
library)
 + + shm                    : Enable support for shm
 - - speex                  : Add support for the speex audio codec
(used for speech)
 - - tga                    : Enables Targa video output
 - - theora                 : Add support for the Theora Video
Compression Codec
 - - toolame                : Enable toolame MPEG-2 encoding
 - - tremor                 : Enable internal support for Vorbis
 + + truetype               : Add support for FreeType and/or FreeType2
fonts
 - - twolame                : Enable twolame MPEG-2 encoding
 + + unicode                : Add support for Unicode
 - - v4l                    : Enable support for video4linux (using
linux-headers or userspace libv4l libraries)
 - - vcd                    : Enables VCD support
 - - vdpau                  : Enable the Video Decode and Presentation
API for Unix acceleration interface
 - - video_cards_mga        : VIDEO_CARDS setting to build driver for
mga video cards
 + + vorbis                 : Add support for the OggVorbis audio codec
 + + x264                   : Enable h264 encoding using x264
 - - xinerama               : Add support for querying multi-monitor
screen geometry through the Xinerama API
 + + xscreensaver           : Add support for XScreenSaver extension
 + + xv                     : Add in optional support for the Xvideo
extension (an X API for video playback)
 + + xvid                   : Add support for xvid.org's open-source
mpeg-4 codec
 - - yuv4mpeg               : Enables yuv4mpeg video output
 - - zoran                  : Enables ZR360[56]7/ZR36060 video output
***@fireball / #


Took me a bit to find time to try everything.  Since I turned off
thumbnails in all the open tabs in dolphin, the file is a lot quieter. 
I'm pretty certain the thumbnails is the cause of this.  It gets things
put in that file still but not near as much. 

Dale

:-)  :-) 
Michael
2023-12-02 10:10:02 UTC
Permalink
Post by Michael
Post by Dale
Howdy,
I was poking around the other day and noticed a large log file. At
first I thought it was smplayer but it does it even when smplayer is
closed. So, I tested several things and finally noticed it stops
generating errors when I turn off showing thumbnails in dolphin. This
is a sample of what it enters into xorg-sessions.log file.
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection
possible!
When I cut off thumbnails and turn it back on, I also get some messages
like this.
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
store B-frames ('packed B-frames'). Consider using the
mpeg4_unpack_bframes bitstream filter without encoding but stream copy
to fix it.
I cleared the log file since it was over 1GB. I looked around in
dolphin settings and can't figure out a way to cut those messages off.
I'm not sure how to fix this. If the video is broken somehow, they all
play fine on my TV. I'm kinda thinking that something is is having
problems but I don't know how it generates thumbnails to know what that
is.
Anyone have ideas or thoughts on this? Is it a bug that will be fixed
soon and just give it time? Should I threaten it with a hammer? ROFL
Thanks.
Dale
:-) :-)
Is your issue related to these logs being generated, or to these logs being
captured. If the latter, then my previous response on configuring the sddm
logs should help.
Replying here since the original post has the correct info. Took me a
bit to try some of things in other reply. I had to help install two TVs
and tried to do some hunting today for a friend. Most of the files you
mentioned aren't on this system and some paths don't exist either.
Maybe different USE flags or something?? I dunno.
Unless you create your own sddm config file in /etc, the sddm package uses a
default config file. From the man page:

FILES
/usr/share/sddm/sddm.conf.d
System configuration directory

/etc/sddm.conf.d
Local configuration directory

/etc/sddm.conf
Local configuration file for compatibility

/usr/share/sddm/themes
Where sddm looks for themes

Search in the above paths and you should find the default sddm config file,
which you can copy over to /etc and tweak it to stop it recording events in
your user xsession log file.
Since this is
actually dolphin, what does dolphin use to generate those thumbnails?
Maybe I need to beat some sense into that thing. Another thing that hit
me, I have three video packages installed, these three.
I would think it uses ffmpeg to decompress, parse, decode and play a file when
previewed in dolphin.
* Searching for mpv ...
[IP-] [ ] media-video/mpv-0.36.0-r1:0/2
* Searching for ffmpeg ...
[IP-] [ ] media-video/ffmpeg-4.4.4-r8:0/56.58.58
* Searching for mplayer ...
[IP-] [ ] media-video/mplayer-1.5_p20230618:0
I'm wondering, if I remove ffmpeg, could my video players use mpv or
mplayer?
I understand these video players use ffmpeg libraries too.
Does dolphin use ffmpeg or mplayer to generate the
thumbnails?
Yes:

~ $ lsof | grep ffmpeg
kioslave5 8826 michael mem REG 0,19
435168 /usr/lib64/qt5/plugins/kf5/thumbcreator/ffmpegthumbs.so (path dev=0,23)


Dolpin would not need a video player's functionality just to preview a
thumbnail of a video file.
I need to keep mpv because I use that to play videos
directly. I think smplayer needs mplayer, maybe. Another thought,
you see any USE flags that need to be changed? Maybe I missed a new one
that I need to enable or something.
If I recall correctly you have NVidia graphics card(s), so you should enable
the nvidia related hardware acceleration for better performance and less CPU
load; e.g. nvencm and/or vdpau
[ Legend : U - final flag setting for installation]
[ : I - package is installed with flag ]
[ Colors : set, unset ]
U I
+ + X : Add support for X11
+ + alsa : Add support for
media-libs/alsa-lib (Advanced Linux Sound Architecture)
- - archive : Enable support for various
archive formats via app-arch/libarchive
+ + bluray : Enable playback of Blu-ray
filesystems
+ + cdda : Add Compact Disk Digital Audio
(Standard Audio CD) support
+ + cli : Enable the command-line player
- - debug : Enable extra debug codepaths,
like asserts and extra output. If you want to get meaningful backtraces see
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
+ + drm : Enable Kernel Mode Setting /
Direct Rendering Manager based video outputs
- - dvb : Add support for DVB (Digital
Video Broadcasting)
+ + dvd : Add support for DVDs
+ + egl : Enable support for various
EGL-based video outputs / backends
- - gamepad : Enable gamepad input support
+ + iconv : Enable support for the iconv
character set conversion library
- - jack : Add support for the JACK Audio
Connection Kit
+ + javascript : Enable javascript support
+ + jpeg : Add JPEG image support
+ + lcms : Add lcms support (color
management engine)
- - libcaca : Add support for colored ASCII-art
graphics
+ + libmpv : Enable the shared library and
headers (used by frontends / plugins)
+ + libplacebo : Enable support for GPU
accelerated video rendering with media-libs/libplacebo
+ + lua : Enable Lua scripting, OSC (On
Screen Controller) GUI, and net-misc/yt-dlp support
- - nvenc : Add support for NVIDIA
Encoder/Decoder (NVENC/NVDEC) API for hardware accelerated encoding and
decoding on NVIDIA cards (requires
x11-drivers/nvidia-drivers)
- - openal : Add support for the Open Audio
Library
+ + opengl : Enable support for OpenGL-based
video backends (Note: deprecated for X11, USE=egl provides the newer
support for -gpu-api=opengl)
+ + pipewire : Enable sound support via native
PipeWire backend
+ + pulseaudio : Add sound server support via
media-libs/libpulse (may be PulseAudio or PipeWire)
- - python_single_target_python3_10 : Build for Python 3.10 only
+ + python_single_target_python3_11 : Build for Python 3.11 only
- - rubberband : Enable high quality pitch
correction via media-libs/rubberband
+ + sdl : Enable media-libs/libsdl2 based
video and audio outputs (Note: these outputs exist for compatibility
reasons only, avoid if
possible)
- - sixel : Enable support for the sixel
video backend using media-libs/libsixel
- - sndio : Enable sound support via
media-sound/sndio
- - test : Enable dependencies and/or
preparations necessary to run tests (usually controlled by FEATURES=test
but can be toggled
independently)
mpv_identify.sh, mpv_idet.sh, and umpv
+ + uchardet : Enable subtitles charset
discovery via app-i18n/uchardet
- - vaapi : Enable Video Acceleration API for
hardware decoding
- - vdpau : Enable the Video Decode and
Presentation API for Unix acceleration interface
+ + vulkan : Add support for 3D graphics and
computing via the Vulkan cross-platform API
+ + wayland : Enable dev-libs/wayland backend
+ + xv : Add in optional support for the
Xvideo extension (an X API for video playback)
- - zimg : Enable libzimg support (for
vf_fingerprint)
+ + zlib : Add support for zlib compression
U I
+ + X : Add support for X11
- - abi_x86_32 : 32-bit (x86) libraries
+ + alsa : Add support for media-libs/alsa-lib
(Advanced Linux Sound Architecture)
- - amf : Enables support for AMD's Advanced Media
Framework (AMF)
- - amr : Enables Adaptive Multi-Rate Audio support
- - amrenc : Enables Adaptive Multi-Rate Audio encoding
support with media-libs/vo-amrwbenc.
+ + bluray : Enable playback of Blu-ray filesystems
- - bs2b : Enables media-libs/libbs2b based Bauer
stereo-to-binaural filter.
+ + bzip2 : Enable bzip2 compression support
- - cdio : Enables audio CD grabbing with
dev-libs/libcdio.
- - chromaprint : Enables audio fingerprinting support with
media-libs/chromaprint.
- - chromium : Builds libffmpeg.so to enable media
playback in Chromium-based browsers like Opera and Vivaldi.
- - codec2 : Enables codec2 low bit rate speech codec
support via media-libs/codec2.
- - cpu_flags_x86_3dnow : Use the 3DNow! instruction set
- - cpu_flags_x86_3dnowext : Use the Enhanced 3DNow! instruction set
+ + cpu_flags_x86_aes : Enable support for Intel's AES instruction
set (AES-NI)
+ + cpu_flags_x86_avx : Adds support for Advanced Vector
Extensions instructions
- - cpu_flags_x86_avx2 : Adds support for Advanced Vector
Extensions 2 instructions
+ + cpu_flags_x86_fma3 : Use the Fused Multiply Add 3 instruction
set ([fma] in cpuinfo)
+ + cpu_flags_x86_fma4 : Use the Fused Multiply Add 4 instruction set
+ + cpu_flags_x86_mmx : Use the MMX instruction set
+ + cpu_flags_x86_mmxext : Use the Extended MMX instruction set (a
subset of SSE) ([mmxext] or [sse] in cpuinfo)
+ + cpu_flags_x86_sse : Use the SSE instruction set
+ + cpu_flags_x86_sse2 : Use the SSE2 instruction set
+ + cpu_flags_x86_sse3 : Use the SSE3 instruction set ([pni] in
cpuinfo, NOT ssse3)
+ + cpu_flags_x86_sse4_1 : Enable SSE4.1 instruction support
+ + cpu_flags_x86_sse4_2 : Enable SSE4.2 instruction support
+ + cpu_flags_x86_ssse3 : Use the SSSE3 instruction set (NOT sse3/pni)
+ + cpu_flags_x86_xop : Enable the XOP instruction set
- - cpudetection : Enables runtime CPU detection (useful for
bindist, compatibility on other CPUs)
- - cuda : Enables CUDA-based acceleration. Mostly
used for specific filters.
+ - dav1d : Enables AV1 decoding via media-libs/dav1d.
- - debug : Enable extra debug codepaths, like asserts
and extra output. If you want to get meaningful backtraces see
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
- - doc : Add extra documentation (API, Javadoc,
etc). It is recommended to enable per package instead of globally
+ + encode : Add support for encoding of audio or video
files
+ - fdk : Use external fdk-aac library for AAC encoding
+ - fftools_aviocat : cat's a URL to another one, useful for
dumping streams.
+ - fftools_cws2fws : converts cws files (Macromedia Flash,
compressed) to fws ones (Macromedia Flash, uncompressed).
+ - fftools_ffescape : Escapes an input string, adopting the
av_get_token() escaping logic.
+ - fftools_ffeval : A simple expression evalutor.
+ - fftools_ffhash : Computes a file's digest using libavutil
algorithms.
+ - fftools_fourcc2pixfmt : Shows the relationships between rawvideo
pixel formats and FourCC tags.
+ - fftools_graph2dot : A tool to convert a libavfilter graph to a
dot file.
+ - fftools_ismindex : A tool for creating smooth streaming
manifests.
+ - fftools_pktdumper : Dumps packets as demuxed by libavformat.
+ - fftools_qt-faststart : Rearranges a Quicktime file to facilitate
network streaming.
+ - fftools_sidxindex : Write an MPD file for fragmented MP4 files
with a sidx index at the start of the file.
+ - fftools_trasher : Writes burts of random data into a file.
Great for testing error robustness/resilience/concealment.
- - flite : Adds a text-to-speech filter based on
app-accessibility/flite.
+ + fontconfig : Support for configuring and customizing
font access via media-libs/fontconfig
+ + frei0r : Enable frei0r wrapping in libavfilter
- - fribidi : Enables fribidi support in the drawtext
filter.
- - gcrypt : Enables gcrypt support: Needed for
rtmp(t)e support if openssl, librtmp or gmp is not used.
- - glslang : Use dev-util/glslang to compile GLSL
- - gme : Enables support for
media-libs/game-music-emu for playing various video game music formats.
- - gmp : Add support for dev-libs/gmp (GNU MP library)
+ - gnutls : Prefer net-libs/gnutls as SSL/TLS provider
(ineffective with USE=-ssl)
+ - gpl : Build GPL code. Should be enabled unless
you require LGPL binaries.
- - gsm : Add support for the gsm lossy speech
compression codec
- - hardcoded-tables : Use pre-calculated tables rather than
calculating them on the fly. It results in an increase of approximately
15% in the size of
libavcodec, the main library impacted by
this change. It enables savings in table generation time, done once at
codec initialization, since
by hardcoding the tables, they do not need
to be computed at runtime. However, the savings are often negligible
(~100k cycles is a typical
number) especially when amortized over the
entire encoding/decoding operation. Improvements are being made to the
runtime initialization,
and so over time, this option will have an
impact on fewer and fewer codecs.
+ + iconv : Enable support for the iconv character set
conversion library
- - iec61883 : Support for FireWire DV/HDV input device
using media-libs/libiec61883.
- - ieee1394 : Enable FireWire/iLink IEEE1394 support
(dv, camera, ...)
- - jack : Add support for the JACK Audio Connection Kit
+ + jpeg2k : Support for JPEG 2000, a wavelet-based
image compression format
- - jpegxl : Add JPEG XL image support
- - kvazaar : Enables media-libs/kvazaar based HEVC encoder.
- - ladspa : Enable the ability to support ladspa plugins +
+ lcms : Enable ICC profile support via
media-libs/lcms.
- - libaom : Enables media-libs/libaom based AV1 codec
support.
- - libaribb24 : Enables ARIB text and caption decoding via
media-libs/aribb24.
+ - libass : SRT/SSA/ASS (SubRip / SubStation Alpha)
subtitle support
- - libcaca : Add support for colored ASCII-art graphics
- - libdrm : Enables x11-libs/libdrm support for better
screen grabbing and hardware accelerated codecs.
- - libilbc : Enables iLBC de/encoding via
media-libs/libilbc.
- - libplacebo : Adds flexible GPU-accelerated processing
filter based on media-libs/libplacebo.
- - librtmp : Enables Real Time Messaging Protocol using
librtmp (media-video/rtmpdump) in addition to FFmpeg's native
implementation.
- - libsoxr : Enables audio resampling through
media-libs/soxr.
- - libtesseract : Enables the OCR filter via app-text/tesseract.
- - libv4l : Uses media-libs/libv4l for video4linux instead
of direct calls. Adds support for more devices via the userspace library.
- - libxml2 : Uses dev-libs/libxml2 to enable dash
demuxing support.
- - lv2 : Enables lv2 audio filter wrapper.
+ + lzma : Support for LZMA compression algorithm
- - modplug : Add libmodplug support for playing
SoundTracker-style music files
+ + mp3 : Add support for reading mp3 files
+ - network : Enables network streaming support
- - nvenc : Add support for NVIDIA Encoder/Decoder
(NVENC/NVDEC) API for hardware accelerated encoding and decoding on
NVIDIA cards (requires
x11-drivers/nvidia-drivers)
- - openal : Add support for the Open Audio Library
- - opencl : Enable OpenCL support
+ + opengl : Add support for OpenGL (3D graphics)
+ - openh264 : Enables H.264 encoding suppoprt via
media-libs/openh264.
- - openssl : Enables dev-libs/openssl support. Adds
support for encrypted network protocols (TLS/HTTPS).
- - opus : Enable Opus audio codec support
- - oss : Add support for OSS (Open Sound System)
- - pic : Force shared libraries to be built as PIC
(this is slower)
+ - postproc : Build and install libpostproc.
+ + pulseaudio : Add sound server support via
media-libs/libpulse (may be PulseAudio or PipeWire)
- - qsv : Enable Intel Quick Sync Video via
media-libs/intel-mediasdk (ffmpeg versions older than, and including,
5.1) or media-libs/oneVPL (ffmpeg
version newer than 5.1).
- - rav1e : Enables AV1 encoding support via
media-video/rav1e.
- - rubberband : Adds time-stretching and pitch-shifting
audio filter based on media-libs/rubberband.
- - samba : Add support for SAMBA (Windows File and
Printer sharing)
+ + sdl : Add support for Simple Direct Layer (media
library)
- - shaderc : Use media-libs/shaderc to compile GLSL
- - snappy : Enable app-arch/snappy support. Required
for e.g. Vidvox Hap encoder.
- - sndio : Enable support for the media-sound/sndio
backend
- - speex : Add support for the speex audio codec
(used for speech)
- - srt : Enable support for Secure Reliable
Transport (SRT) via net-libs/srt
- - ssh : Enable SSH/sftp support via net-libs/libssh.
- - static-libs : Build static versions of dynamic libraries
as well
+ + svg : Add support for SVG (Scalable Vector Graphics)
- - svt-av1 : Enables AV1 encoding support via
media-libs/svt-av1.
- - test : Enable dependencies and/or preparations
necessary to run tests (usually controlled by FEATURES=test but can be
toggled independently)
+ - theora : Add support for the Theora Video
Compression Codec
+ - threads : Add threads support for various packages.
Usually pthreads
+ + truetype : Enables drawtext filter via
media-libs/freetype and media-libs/harfbuzz.
- - twolame : Enables MP2 encoding via
media-sound/twolame as an alternative to the internal encoder.
- - v4l : Enable support for video4linux (using
linux-headers or userspace libv4l libraries)
- - vaapi : Enable Video Acceleration API for hardware
decoding
- - vdpau : Enable the Video Decode and Presentation
API for Unix acceleration interface
- - verify-sig : Verify upstream signatures on distfiles
- - vidstab : Enables video stabilization filter using
vid.stab library (media-libs/vidstab).
- - vmaf : Enables Netflix's perceptual video quality
assessment filter using the library (media-libs/libvmaf).
+ + vorbis : Add support for the OggVorbis audio codec
+ - vpx : Enables VP8 and VP9 codec support using
libvpx: Decoding does not require this to be enabled but libvpx can also
be used for decoding;
encoding requires this useflag to be
enabled though.
+ + vulkan : Add support for 3D graphics and computing
via the Vulkan cross-platform API
+ + webp : Add support for the WebP image format
+ + x264 : Enable h264 encoding using x264
+ + x265 : Enables HEVC encoding with media-libs/x265.
+ + xvid : Add support for xvid.org's open-source
mpeg-4 codec
- - zeromq : Enables net-libs/zeromq support with the
zmq/azmq filters.
- - zimg : Enables media-libs/zimg based scale filter.
+ + zlib : Add support for zlib compression
- - zvbi : Enables media-libs/zvbi based teletext
decoder.
U I
+ + X : Add support for X11
+ + a52 : Enable support for decoding ATSC A/52
streams used in DVD
- - aalib : Add support for media-libs/aalib
(ASCII-Graphics Library)
+ + alsa : Add support for media-libs/alsa-lib
(Advanced Linux Sound Architecture)
+ + bidi : Enable bidirectional language support
- - bl : Blinkenlights video output
+ + bluray : Enable playback of Blu-ray filesystems
- - bs2b : Enable Bauer stereophonic-to-binaural
headphone filter
+ + cddb : Access cddb servers to retrieve and submit
information about compact disks
+ + cdio : Use libcdio for CD support (instead of
cdparanoia)
+ + cdparanoia : Enable cdparanoia (audio CD ripper) support
- - cpu_flags_x86_3dnow : Use the 3DNow! instruction set
- - cpu_flags_x86_3dnowext : Use the Enhanced 3DNow! instruction set
+ + cpu_flags_x86_avx : Adds support for Advanced Vector
Extensions instructions
- - cpu_flags_x86_avx2 : Adds support for Advanced Vector
Extensions 2 instructions
+ + cpu_flags_x86_fma3 : Use the Fused Multiply Add 3 instruction
set ([fma] in cpuinfo)
+ + cpu_flags_x86_fma4 : Use the Fused Multiply Add 4 instruction set
+ + cpu_flags_x86_mmx : Use the MMX instruction set
+ + cpu_flags_x86_mmxext : Use the Extended MMX instruction set (a
subset of SSE) ([mmxext] or [sse] in cpuinfo)
+ + cpu_flags_x86_sse : Use the SSE instruction set
+ + cpu_flags_x86_sse2 : Use the SSE2 instruction set
+ + cpu_flags_x86_sse3 : Use the SSE3 instruction set ([pni] in
cpuinfo, NOT ssse3)
+ + cpu_flags_x86_sse4_1 : Enable SSE4.1 instruction support
+ + cpu_flags_x86_sse4_2 : Enable SSE4.2 instruction support
+ + cpu_flags_x86_ssse3 : Use the SSSE3 instruction set (NOT sse3/pni)
+ + cpu_flags_x86_xop : Enable the XOP instruction set
- - cpudetection : Enables runtime CPU detection (useful for
binpkgs, compatibility on other CPUs)
- - debug : Enable extra debug codepaths, like asserts
and extra output. If you want to get meaningful backtraces see
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
- - dga : Add DGA (Direct Graphic Access) support for X
- - doc : Add extra documentation (API, Javadoc,
etc). It is recommended to enable per package instead of globally
- - dts : Enable DTS Coherent Acoustics decoder support
- - dv : Enable support for a codec used by many
camcorders
- - dvb : Add support for DVB (Digital Video
Broadcasting)
+ + dvd : Add support for DVDs
+ + dvdnav : Use forked libdvdnav, navigate menus in GUIs
+ + enca : Enables support for charset discovery and
conversion
+ + encode : Add support for encoding of audio or video
files
+ + faac : Use external faac library for AAC encoding
- - faad : Use external faad library for AAC decoding
- - fbcon : Add framebuffer support for the console,
via the kernel
- - ftp : Add FTP (File Transfer Protocol) support
- - ggi : Add support for media-libs/libggi (non-X
video api/drivers)
- - gsm : Add support for the gsm lossy speech
compression codec
+ + iconv : Enable support for the iconv character set
conversion library
+ + ipv6 : Add support for IP version 6
- - jack : Add support for the JACK Audio Connection Kit
- - joystick : Add support for joysticks in all packages
+ + jpeg : Add JPEG image support
- - ladspa : Enable the ability to support ladspa plugins
+ + libass : SRT/SSA/ASS (SubRip / SubStation Alpha)
subtitle support
- - libcaca : Add support for colored ASCII-art graphics
- - libmpeg2 : Build support for mpeg2 over
media-libs/libmpeg2 rather than using ffmpeg.
- - lirc : Add support for lirc (Linux's Infra-Red
Remote Control)
- - live : Enables live.com streaming media support
- - lzo : Enable support for lzo compression
+ + mad : Add support for mad (high-quality mp3
decoder library and cli frontend)
- - md5sum : Enables md5sum video output
+ + mng : MNG input support
+ + mp3 : Add support for reading mp3 files
- - nas : Add support for network audio sound
+ + network : Enables network streaming support
- - openal : Add support for the Open Audio Library
+ + opengl : Add support for OpenGL (3D graphics)
+ + osdmenu : Enables support for on-screen display
(OSD) menus
- - oss : Add support for OSS (Open Sound System)
+ + png : Add support for libpng (PNG images)
- - pnm : Add PNM video output option, to create
PPM/PGM/PGMYUV images
+ + pulseaudio : Add sound server support via
media-libs/libpulse (may be PulseAudio or PipeWire)
- - pvr : Enable Video4Linux2 MPEG PVR
- - radio : Enable V4L2 radio interface and support
+ + rar : Enable Unique RAR File Library
- - rtc : Enables usage of the linux real time
clock. The alternative is software emulation of rtc
- - rtmp : Enables RTMPDump Streaming Media support
- - samba : Add support for SAMBA (Windows File and
Printer sharing)
+ + sdl : Add support for Simple Direct Layer (media
library)
+ + shm : Enable support for shm
- - speex : Add support for the speex audio codec
(used for speech)
- - tga : Enables Targa video output
- - theora : Add support for the Theora Video
Compression Codec
- - toolame : Enable toolame MPEG-2 encoding
- - tremor : Enable internal support for Vorbis
+ + truetype : Add support for FreeType and/or FreeType2
fonts
- - twolame : Enable twolame MPEG-2 encoding
+ + unicode : Add support for Unicode
- - v4l : Enable support for video4linux (using
linux-headers or userspace libv4l libraries)
- - vcd : Enables VCD support
- - vdpau : Enable the Video Decode and Presentation
API for Unix acceleration interface
- - video_cards_mga : VIDEO_CARDS setting to build driver for
mga video cards
+ + vorbis : Add support for the OggVorbis audio codec
+ + x264 : Enable h264 encoding using x264
- - xinerama : Add support for querying multi-monitor
screen geometry through the Xinerama API
+ + xscreensaver : Add support for XScreenSaver extension
+ + xv : Add in optional support for the Xvideo
extension (an X API for video playback)
+ + xvid : Add support for xvid.org's open-source
mpeg-4 codec
- - yuv4mpeg : Enables yuv4mpeg video output
- - zoran : Enables ZR360[56]7/ZR36060 video output
Took me a bit to find time to try everything. Since I turned off
thumbnails in all the open tabs in dolphin, the file is a lot quieter.
I'm pretty certain the thumbnails is the cause of this. It gets things
put in that file still but not near as much.
Dale
:-) :-)
You can play any of the files in dolphin with ffplay and see what it prints
out in a terminal; e.g. this is what I get here when I try to play a .ts file:

[snip ...]
[h264 @ 0x7fce8c02b540] decode_slice_header error
[h264 @ 0x7fce8c02b540] no frame!
[h264 @ 0x7fce8c02b540] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 0x7fce8c02b540] decode_slice_header error
[h264 @ 0x7fce8c02b540] no frame!
[snip...]

[mpegts @ 0x7fce8c000c80] PES packet size mismatch
[mpegts @ 0x7fce8c000c80] Packet corrupt (stream = 0, dts = 2148448224).
[mpegts @ 0x7fce8c000c80] PES packet size mismatch
[mpegts @ 0x7fce8c000c80] Packet corrupt (stream = 1, dts = 2148389620).
[mpegts @ 0x7fce8c000c80] PES packet size mismatch
[mpegts @ 0x7fce8c000c80] Packet corrupt (stream = 3, dts = 2148473424).
[mpegts @ 0x7fce8c000c80] Could not find codec parameters for stream 2
(Unknown: none ([17][0][0][0] / 0x0011)): unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize'
(5000000) options

If the same output as in ffplay in a terminal is also captured in the sddm
xsession log, then obviously this is ffmpeg causing it. As far as I know
ffmpeg is necessary to decode/convert/encode/mux video and audio files, for
most of the media players and front ends in Linux. I think VLC may have its
own libraries, but not sure.

You can use lsof, or strace to see what libraries dolphin is accessing when it
is previewing thumbnails and confirm if ffmpeg is involved.

Anyway, your issue is not necessarily ffmpeg libraries printing warnings, but
sddm capturing these in its logs. I expect reprogramming dolphin to call
ffplay with -loglevel 'quiet' would require tweaking kde code. You could ask
upstream if they want to look into it. In the first instance it will be
easier to disable/redirect the sddm log file as I suggested, than trying to
modify kde applications.
Dale
2023-12-03 02:20:01 UTC
Permalink
Post by Michael
Unless you create your own sddm config file in /etc, the sddm package uses a
FILES
/usr/share/sddm/sddm.conf.d
System configuration directory
/etc/sddm.conf.d
Local configuration directory
/etc/sddm.conf
Local configuration file for compatibility
/usr/share/sddm/themes
Where sddm looks for themes
Search in the above paths and you should find the default sddm config file,
which you can copy over to /etc and tweak it to stop it recording events in
your user xsession log file.
For the first file, not here.  I have this but no config file that I
see.  Others below that.


***@fireball / # ls /usr/share/sddm/
total 44
drwxr-xr-x   7 root root  4096 Jul  2 11:05 .
drwxr-xr-x 411 root root 20480 Dec  2 19:20 ..
drwxr-xr-x   2 root root  4096 Dec  5  2022 faces
drwxr-xr-x   2 root root  4096 Jul  2 11:05 flags
drwxr-xr-x   2 root root  4096 Jul  2 11:05 scripts
drwxr-xr-x   8 root root  4096 Nov  4  2019 themes
drwxr-xr-x   2 root root  4096 Jul  2 11:05 translations
***@fireball / #

cat /etc/sddm.conf.d/01gentoo.conf
[General]
# Remove qtvirtualkeyboard as InputMethod default
InputMethod=
***@fireball / #

cat /etc/sddm.conf
[Autologin]
Relogin=false
Session=
User=

[General]
HaltCommand=
RebootCommand=

[Theme]
Current=maldives
CursorTheme=Adwaita

[Users]
MaximumUid=60000
MinimumUid=1000
***@fireball / #


This may help give ideas on what I do have. 


***@fireball / # locate sddm.conf
/etc/sddm.conf
/etc/sddm.conf.d
/etc/config-archive/etc/sddm.conf
/etc/config-archive/etc/sddm.conf.dist
/etc/sddm.conf.d/01gentoo.conf
/usr/lib/sysusers.d/acct-group-sddm.conf
/usr/lib/sysusers.d/acct-user-sddm.conf
/usr/lib/tmpfiles.d/sddm.conf
/usr/share/dbus-1/system.d/org.freedesktop.sddm.conf
/usr/share/dbus-1/system.d/org.kde.kcontrol.kcmsddm.conf
/usr/share/man/man5/sddm.conf.5.bz2
Post by Michael
Post by Dale
Since this is
actually dolphin, what does dolphin use to generate those thumbnails?
Maybe I need to beat some sense into that thing. Another thing that hit
me, I have three video packages installed, these three.
I would think it uses ffmpeg to decompress, parse, decode and play a file when
previewed in dolphin.
Post by Dale
* Searching for mpv ...
[IP-] [ ] media-video/mpv-0.36.0-r1:0/2
* Searching for ffmpeg ...
[IP-] [ ] media-video/ffmpeg-4.4.4-r8:0/56.58.58
* Searching for mplayer ...
[IP-] [ ] media-video/mplayer-1.5_p20230618:0
I'm wondering, if I remove ffmpeg, could my video players use mpv or
mplayer?
I understand these video players use ffmpeg libraries too.
Post by Dale
Does dolphin use ffmpeg or mplayer to generate the
thumbnails?
~ $ lsof | grep ffmpeg
kioslave5 8826 michael mem REG 0,19
435168 /usr/lib64/qt5/plugins/kf5/thumbcreator/ffmpegthumbs.so (path dev=0,23)
Dolpin would not need a video player's functionality just to preview a
thumbnail of a video file.
Post by Dale
I need to keep mpv because I use that to play videos
directly. I think smplayer needs mplayer, maybe. Another thought,
you see any USE flags that need to be changed? Maybe I missed a new one
that I need to enable or something.
If I recall correctly you have NVidia graphics card(s), so you should enable
the nvidia related hardware acceleration for better performance and less CPU
load; e.g. nvencm and/or vdpau
I'm working on enabling those USE flags.  For months now, I've ran into
a block with opencascade, vlc, pipewire and several other video
packages.  I have to emerge -C vlc and opencascade to do emerges on
video stuff then re-emerge them when done.  I don't know if it is me or
something else but it has been that way for months.  I posted a thread
about it a few months back.  I dunno.  I'm working on the change now.  ;-) 

And mplayer just failed with this nifty message. 


SIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ISOC99_SOURCE -I. -Iffmpeg
-march=native -O2 -pipe -fno-tree-vectorize
-fno-asynchronous-unwind-tables -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fpie -DPIC -D_REENTRANT
-D_REENTRANT -I/usr/include/dvdcss -I/usr/include/freetype2
-I/usr/include/harfbuzz -I/usr/include/glib-2.0
-I/usr/lib64/glib-2.0/include -DZLIB_CONST -I/usr/include/dvdcss -c -o
libmpcodecs/img_format.o libmpcodecs/img_format.c
x86_64-pc-linux-gnu-gcc -MMD -MP -Wundef -Wstrict-prototypes
-Wmissing-prototypes -Wdisabled-optimization -Wno-pointer-sign
-Wdeclaration-after-statement -std=gnu99 -D_POSIX_C_SOURCE=200112
-D_XOPEN_SOURCE=600 -D_ISOC99_SOURCE -I. -Iffmpeg -march=native -O2
-pipe -fno-tree-vectorize -fno-asynchronous-unwind-tables
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fpie
-DPIC -D_REENTRANT -D_REENTRANT -I/usr/include/dvdcss
-I/usr/include/freetype2 -I/usr/include/harfbuzz -I/usr/include/glib-2.0
-I/usr/lib64/glib-2.0/include -DZLIB_CONST -I/usr/include/dvdcss -c -o
libmpcodecs/mp_image.o libmpcodecs/mp_image.c
libmpcodecs/mp_image.c: In function 'mp_image_alloc_planes':
libmpcodecs/mp_image.c:39:39: error: 'INT_MAX' undeclared (first use in
this function)
   39 |   if ((unsigned int)mpi->height + 2 > INT_MAX ||
      |                                       ^~~~~~~
libmpcodecs/mp_image.c:34:1: note: 'INT_MAX' is defined in header
'<limits.h>'; did you forget to '#include <limits.h>'?
   33 | #include "mp_msg.h"
  +++ |+#include <limits.h>
   34 |
libmpcodecs/mp_image.c:39:39: note: each undeclared identifier is
reported only once for each function it appears in
   39 |   if ((unsigned int)mpi->height + 2 > INT_MAX ||
      |                                       ^~~~~~~
make: *** [Makefile:730: libmpcodecs/mp_image.o] Error 1
 * ERROR: media-video/mplayer-1.5_p20230618::gentoo failed (compile phase):
 *   emake failed
 *


A duck search didn't turn up anything.  No clue.  I'll try again in a
bit when the others finish and if that fails, a different version.
Post by Michael
Post by Dale
<<<< SNIP >>>
Took me a bit to find time to try everything. Since I turned off
thumbnails in all the open tabs in dolphin, the file is a lot quieter.
I'm pretty certain the thumbnails is the cause of this. It gets things
put in that file still but not near as much.
Dale
:-) :-)
You can play any of the files in dolphin with ffplay and see what it prints
[snip ...]
Last message repeated 1 times
[snip...]
(Unknown: none ([17][0][0][0] / 0x0011)): unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize'
(5000000) options
If the same output as in ffplay in a terminal is also captured in the sddm
xsession log, then obviously this is ffmpeg causing it. As far as I know
ffmpeg is necessary to decode/convert/encode/mux video and audio files, for
most of the media players and front ends in Linux. I think VLC may have its
own libraries, but not sure.
You can use lsof, or strace to see what libraries dolphin is accessing when it
is previewing thumbnails and confirm if ffmpeg is involved.
Anyway, your issue is not necessarily ffmpeg libraries printing warnings, but
sddm capturing these in its logs. I expect reprogramming dolphin to call
ffplay with -loglevel 'quiet' would require tweaking kde code. You could ask
upstream if they want to look into it. In the first instance it will be
easier to disable/redirect the sddm log file as I suggested, than trying to
modify kde applications.
I'm thinking stopping the messages is the right way too.  After all,
everything is working so there is no need for the messages.  Trouble
seems to find me quite often.  o_O 

Dale

:-)  :-) 
Michael
2023-12-03 11:30:01 UTC
Permalink
Post by Michael
Unless you create your own sddm config file in /etc, the sddm package uses
FILES
/usr/share/sddm/sddm.conf.d
System configuration directory
/etc/sddm.conf.d
Local configuration directory
/etc/sddm.conf
Local configuration file for compatibility
/usr/share/sddm/themes
Where sddm looks for themes
Search in the above paths and you should find the default sddm config file,
which you can copy over to /etc and tweak it to stop it recording events in
your user xsession log file.
For the first file, not here. I have this but no config file that I
see. Others below that.
total 44
drwxr-xr-x 7 root root 4096 Jul 2 11:05 .
drwxr-xr-x 411 root root 20480 Dec 2 19:20 ..
drwxr-xr-x 2 root root 4096 Dec 5 2022 faces
drwxr-xr-x 2 root root 4096 Jul 2 11:05 flags
drwxr-xr-x 2 root root 4096 Jul 2 11:05 scripts
drwxr-xr-x 8 root root 4096 Nov 4 2019 themes
drwxr-xr-x 2 root root 4096 Jul 2 11:05 translations
cat /etc/sddm.conf.d/01gentoo.conf
[General]
# Remove qtvirtualkeyboard as InputMethod default
InputMethod=
cat /etc/sddm.conf
[Autologin]
Relogin=false
Session=
User=
[General]
HaltCommand=
RebootCommand=
[Theme]
Current=maldives
CursorTheme=Adwaita
[Users]
MaximumUid=60000
MinimumUid=1000
This may help give ideas on what I do have.
My apologies, your files are correct as you've shown, mine are from a previous
sddm version 0.18.1-r8. I had to mask the latest version 0.20.0-r1, because
it won't launch fully on this PC to allow me to login.

This is what you can do easily and without having to add your own new
02_dale_sddm.conf file just to specify the log file path for sddm:

mv ~/.local/share/sddm/xorg-session.log ./
ln -s /dev/null ~/.local/share/sddm/xorg-session.log

then login into Plasma and the problem of an ever growing log file will be
gone. You will need to remove the symlink and restore the log file if you
want to troubleshoot the sddm or desktop in the future.
Post by Michael
If I recall correctly you have NVidia graphics card(s), so you should
enable the nvidia related hardware acceleration for better performance
and less CPU load; e.g. nvencm and/or vdpau
I'm working on enabling those USE flags. For months now, I've ran into
a block with opencascade, vlc, pipewire and several other video
packages. I have to emerge -C vlc and opencascade to do emerges on
video stuff then re-emerge them when done. I don't know if it is me or
something else but it has been that way for months. I posted a thread
about it a few months back. I dunno. I'm working on the change now. ;-)
And mplayer just failed with this nifty message.
SIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ISOC99_SOURCE -I. -Iffmpeg
-march=native -O2 -pipe -fno-tree-vectorize
-fno-asynchronous-unwind-tables -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fpie -DPIC -D_REENTRANT
-D_REENTRANT -I/usr/include/dvdcss -I/usr/include/freetype2
-I/usr/include/harfbuzz -I/usr/include/glib-2.0
-I/usr/lib64/glib-2.0/include -DZLIB_CONST -I/usr/include/dvdcss -c -o
libmpcodecs/img_format.o libmpcodecs/img_format.c
x86_64-pc-linux-gnu-gcc -MMD -MP -Wundef -Wstrict-prototypes
-Wmissing-prototypes -Wdisabled-optimization -Wno-pointer-sign
-Wdeclaration-after-statement -std=gnu99 -D_POSIX_C_SOURCE=200112
-D_XOPEN_SOURCE=600 -D_ISOC99_SOURCE -I. -Iffmpeg -march=native -O2
-pipe -fno-tree-vectorize -fno-asynchronous-unwind-tables
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fpie
-DPIC -D_REENTRANT -D_REENTRANT -I/usr/include/dvdcss
-I/usr/include/freetype2 -I/usr/include/harfbuzz -I/usr/include/glib-2.0
-I/usr/lib64/glib-2.0/include -DZLIB_CONST -I/usr/include/dvdcss -c -o
libmpcodecs/mp_image.o libmpcodecs/mp_image.c
libmpcodecs/mp_image.c:39:39: error: 'INT_MAX' undeclared (first use in
this function)
39 | if ((unsigned int)mpi->height + 2 > INT_MAX ||
| ^~~~~~~
libmpcodecs/mp_image.c:34:1: note: 'INT_MAX' is defined in header
'<limits.h>'; did you forget to '#include <limits.h>'?
33 | #include "mp_msg.h"
+++ |+#include <limits.h>
34 |
libmpcodecs/mp_image.c:39:39: note: each undeclared identifier is
reported only once for each function it appears in
39 | if ((unsigned int)mpi->height + 2 > INT_MAX ||
| ^~~~~~~
make: *** [Makefile:730: libmpcodecs/mp_image.o] Error 1
* emake failed
*
A duck search didn't turn up anything. No clue. I'll try again in a
bit when the others finish and if that fails, a different version.
It looks like a bug to me, missing a declaration of '#include <limits.h>' in
their source code. Worth reporting upstream.
Dale
2023-12-05 21:00:01 UTC
Permalink
Post by Michael
Post by Michael
Unless you create your own sddm config file in /etc, the sddm package uses
FILES
/usr/share/sddm/sddm.conf.d
System configuration directory
/etc/sddm.conf.d
Local configuration directory
/etc/sddm.conf
Local configuration file for compatibility
/usr/share/sddm/themes
Where sddm looks for themes
Search in the above paths and you should find the default sddm config file,
which you can copy over to /etc and tweak it to stop it recording events in
your user xsession log file.
For the first file, not here. I have this but no config file that I
see. Others below that.
total 44
drwxr-xr-x 7 root root 4096 Jul 2 11:05 .
drwxr-xr-x 411 root root 20480 Dec 2 19:20 ..
drwxr-xr-x 2 root root 4096 Dec 5 2022 faces
drwxr-xr-x 2 root root 4096 Jul 2 11:05 flags
drwxr-xr-x 2 root root 4096 Jul 2 11:05 scripts
drwxr-xr-x 8 root root 4096 Nov 4 2019 themes
drwxr-xr-x 2 root root 4096 Jul 2 11:05 translations
cat /etc/sddm.conf.d/01gentoo.conf
[General]
# Remove qtvirtualkeyboard as InputMethod default
InputMethod=
cat /etc/sddm.conf
[Autologin]
Relogin=false
Session=
User=
[General]
HaltCommand=
RebootCommand=
[Theme]
Current=maldives
CursorTheme=Adwaita
[Users]
MaximumUid=60000
MinimumUid=1000
This may help give ideas on what I do have.
My apologies, your files are correct as you've shown, mine are from a previous
sddm version 0.18.1-r8. I had to mask the latest version 0.20.0-r1, because
it won't launch fully on this PC to allow me to login.
This is what you can do easily and without having to add your own new
mv ~/.local/share/sddm/xorg-session.log ./
ln -s /dev/null ~/.local/share/sddm/xorg-session.log
then login into Plasma and the problem of an ever growing log file will be
gone. You will need to remove the symlink and restore the log file if you
want to troubleshoot the sddm or desktop in the future.
Well, I got sidetracked on the ffmpeg thing.  Now that it is fixed, this
file isn't filling with anything.  It just sorta sits there.  I did
empty it at one point and it has stayed that way for a bit now.  Maybe
recompiling some packages and getting everything up to date given other
issue with opencascade and such fixed whatever it was that caused it. 

If it starts filling itself with useless stuff again, back to the
solution you gave. 

Thanks for the help.  :-D

Dale

:-)  :-) 

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