https://bugs.kde.org/show_bug.cgi?id=432915
--- Comment #10 from katastic <cka...@gmail.com> ---
I THINK I FOUND THE ISSUE, as well as a WORKAROUND for users:
- It affects MKV files of significant length. Chopping Hot Rod down to a 1
minute clip (of the affected region) removed the issue. But more importantly:
- Converting the files to MP4 format __removes the issue__
ffmpeg -i [myfile] -c copy -map 0 [output.mp4]
[the -map 0 switch is for keeping multiple audio tracks]
- Tested on both the Hot Rod movie bluray as well one of my affected OBS
recordings
So as far as I can tell, using MP4 files prevents the bug from occurring.
Here is the ffprobe output of the BREAKING version of the Hot Rod movie:
-----------------------------------------------------------------------------
ffmpeg version N-100410-gcd821c18dc Copyright (c) 2000-2020 the FFmpeg
developers
built with gcc 9.3-win32 (GCC) 20200320
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
--pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64
--target-os=mingw32 --enable-gpl --enable-version3 --disable-debug
--disable-w32threads --enable-pthreads --enable-iconv --enable-zlib
--enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp
--enable-lzma --enable-fontconfig --enable-opencl --enable-libvmaf
--enable-vulkan --enable-libvorbis --enable-amf --enable-libaom
--enable-avisynth --enable-libdav1d --enable-libdavs2 --enable-ffnvcodec
--enable-cuda-llvm --enable-libglslang --enable-libass --enable-libbluray
--enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx
--enable-libwebp --enable-libmfx --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e
--enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr
--enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d
--enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxavs2
--enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC
--extra-cxxflags= --extra-ldflags=-pthread --extra-libs=-lgomp
libavutil 56. 62.100 / 56. 62.100
libavcodec 58.115.102 / 58.115.102
libavformat 58. 65.100 / 58. 65.100
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 93.100 / 7. 93.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
Input #0, matroska,webm, from 'Hot.Rod.2007.1080p.BluRay.DTS.x264-ETRG.mkv':
Metadata:
encoder : libebml v1.3.3 + libmatroska v1.4.4
creation_time : 2016-06-29T19:51:54.000000Z
Duration: 01:27:56.15, start: 0.000000, bitrate: 7371 kb/s
Chapter #0:0: start 0.000000, end 512.845000
Metadata:
title : Chapter 1
Chapter #0:1: start 512.845000, end 938.062000
Metadata:
title : Chapter 2
Chapter #0:2: start 938.062000, end 1444.276000
Metadata:
title : Chapter 3
Chapter #0:3: start 1444.276000, end 2003.042000
Metadata:
title : Chapter 4
Chapter #0:4: start 2003.042000, end 2456.745000
Metadata:
title : Chapter 5
Chapter #0:5: start 2456.745000, end 2971.843000
Metadata:
title : Chapter 6
Chapter #0:6: start 2971.843000, end 3441.396000
Metadata:
title : Chapter 7
Chapter #0:7: start 3441.396000, end 3952.782000
Metadata:
title : Chapter 8
Chapter #0:8: start 3952.782000, end 4438.809000
Metadata:
title : Chapter 9
Chapter #0:9: start 4438.809000, end 4982.894000
Metadata:
title : Chapter 10
Chapter #0:10: start 4982.894000, end 5276.150000
Metadata:
title : Chapter 11
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x832 [SAR 1:1
DAR 30:13], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Metadata:
BPS : 5860624
BPS-eng : 5860624
DURATION : 01:27:56.146000000
DURATION-eng : 01:27:56.146000000
NUMBER_OF_FRAMES: 126501
NUMBER_OF_FRAMES-eng: 126501
NUMBER_OF_BYTES : 3865188624
NUMBER_OF_BYTES-eng: 3865188624
_STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit
_STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit
_STATISTICS_WRITING_DATE_UTC: 2016-06-29 19:51:54
_STATISTICS_WRITING_DATE_UTC-eng: 2016-06-29 19:51:54
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s
(default)
Metadata:
title : Surround Sound
BPS : 1508999
BPS-eng : 1508999
DURATION : 01:27:56.150000000
DURATION-eng : 01:27:56.150000000
NUMBER_OF_FRAMES: 494639
NUMBER_OF_FRAMES-eng: 494639
NUMBER_OF_BYTES : 995213668
NUMBER_OF_BYTES-eng: 995213668
_STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit
_STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit
_STATISTICS_WRITING_DATE_UTC: 2016-06-29 19:51:54
_STATISTICS_WRITING_DATE_UTC-eng: 2016-06-29 19:51:54
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
I simply converted using ffmpeg with "-c copy" to MP4 and now the output:
-----------------------------------------------------------------------------
ffprobe version N-100410-gcd821c18dc Copyright (c) 2007-2020 the FFmpeg
developers
built with gcc 9.3-win32 (GCC) 20200320
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
--pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64
--target-os=mingw32 --enable-gpl --enable-version3 --disable-debug
--disable-w32threads --enable-pthreads --enable-iconv --enable-zlib
--enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp
--enable-lzma --enable-fontconfig --enable-opencl --enable-libvmaf
--enable-vulkan --enable-libvorbis --enable-amf --enable-libaom
--enable-avisynth --enable-libdav1d --enable-libdavs2 --enable-ffnvcodec
--enable-cuda-llvm --enable-libglslang --enable-libass --enable-libbluray
--enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx
--enable-libwebp --enable-libmfx --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e
--enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr
--enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d
--enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxavs2
--enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC
--extra-cxxflags= --extra-ldflags=-pthread --extra-libs=-lgomp
libavutil 56. 62.100 / 56. 62.100
libavcodec 58.115.102 / 58.115.102
libavformat 58. 65.100 / 58. 65.100
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 93.100 / 7. 93.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output2-full.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.65.100
Duration: 01:27:56.15, start: 0.000000, bitrate: 7380 kb/s
Chapter #0:0: start 0.000000, end 512.845000
Metadata:
title : Chapter 1
Chapter #0:1: start 512.845000, end 938.062000
Metadata:
title : Chapter 2
Chapter #0:2: start 938.062000, end 1444.276000
Metadata:
title : Chapter 3
Chapter #0:3: start 1444.276000, end 2003.042000
Metadata:
title : Chapter 4
Chapter #0:4: start 2003.042000, end 2456.745000
Metadata:
title : Chapter 5
Chapter #0:5: start 2456.745000, end 2971.843000
Metadata:
title : Chapter 6
Chapter #0:6: start 2971.843000, end 3441.396000
Metadata:
title : Chapter 7
Chapter #0:7: start 3441.396000, end 3952.782000
Metadata:
title : Chapter 8
Chapter #0:8: start 3952.782000, end 4438.809000
Metadata:
title : Chapter 9
Chapter #0:9: start 4438.809000, end 4982.894000
Metadata:
title : Chapter 10
Chapter #0:10: start 4982.894000, end 5276.150000
Metadata:
title : Chapter 11
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x832
[SAR 1:1 DAR 30:13], 5860 kb/s, 23.98 fps, 23.98 tbr, 16k tbn, 47.95 tbc
(default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream #0:1(eng): Audio: dts (DTS) (mp4a / 0x6134706D), 48000 Hz,
5.1(side), fltp, 1536 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Stream #0:2(eng): Data: bin_data (text / 0x74786574)
Metadata:
handler_name : SubtitleHandler
Unsupported codec with id 100359 for input stream 2
I cannot exhaustively say it doesn't break. But I keep flipping through it and
nothing is breaking so far.
Output for my OBS recordings:
-----------------------------------------------------------------------------
Original MKV file ffprobe
libavutil 56. 62.100 / 56. 62.100
libavcodec 58.115.102 / 58.115.102
libavformat 58. 65.100 / 58. 65.100
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 93.100 / 7. 93.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
Input #0, matroska,webm, from '2021-03-04 18-51-20.mkv':
Metadata:
ENCODER : Lavf58.29.100
Duration: 01:38:47.63, start: 0.000000, bitrate: 5170 kb/s
Stream #0:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 1920x1080
[SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
DURATION : 01:38:47.633000000
Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp (default)
Metadata:
title : Track1
DURATION : 01:38:47.552000000
Stream #0:2: Audio: aac (LC), 48000 Hz, stereo, fltp (default)
Metadata:
title : Track2
DURATION : 01:38:47.552000000
Stream #0:3: Audio: aac (LC), 48000 Hz, stereo, fltp (default)
Metadata:
title : Track3
DURATION : 01:38:47.552000000
New version using -c copy -map 0 to mp4 [NOTE: -map 0 is required for
multiple audio tracks to move over]
-----------------------------------------------------------------------------
libavutil 56. 62.100 / 56. 62.100
libavcodec 58.115.102 / 58.115.102
libavformat 58. 65.100 / 58. 65.100
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 93.100 / 7. 93.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2021-03-04 18-51-20B.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.65.100
Duration: 01:38:47.63, start: 0.000000, bitrate: 5174 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1920x1080 [SAR 1:1 DAR 16:9], 4681 kb/s, 30 fps, 30 tbr, 16k tbn, 60
tbc (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 161 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 160 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Stream #0:3(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 157 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
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