May 2025 - FFmpeg-trac - lists.ffmpeg.org

#10659(undetermined:new): Converting to ass subtitles results in overlap.
by FFmpeg 14 May '25

14 May '25

#10659: Converting to ass subtitles results in overlap. -------------------------------------+------------------------------------- Reporter: typological | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: When converting to ass subtitles from srt or vtt, there are some overlaps that weren't there, probably due to wrong rounding. How to reproduce: {{{ % ffmpeg -i sub.srt sub.ass ffmpeg version n6.0 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 13.2.1 (GCC) 20230801 }}} sub.srt (input): {{{ 1 00:00:29,566 --> 00:00:34,332 test 1 2 00:00:34,333 --> 00:00:38,833 test 2 3 00:00:38,833 --> 00:00:39,833 test 3 }}} sub.ass (actual output): {{{ ... [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:29.57,0:00:34.34,Default,,0,0,0,,test 1 Dialogue: 0,0:00:34.33,0:00:38.83,Default,,0,0,0,,test 2 Dialogue: 0,0:00:38.83,0:00:39.83,Default,,0,0,0,,test 3 }}} sub.ass (expected output): {{{ ... [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:29.57,0:00:34.33,Default,,0,0,0,,test 1 Dialogue: 0,0:00:34.33,0:00:38.83,Default,,0,0,0,,test 2 Dialogue: 0,0:00:38.83,0:00:39.83,Default,,0,0,0,,test 3 }}} (note the 34, that should've been 33, at the first Dialogue line) the same happens if I use sub.vtt as input with the command {{{ ffmpeg -i sub.vtt sub.ass }}} with sub.vtt (input) {{{ WEBVTT Kind: captions Language: en 00:00:29.566 --> 00:00:34.332 test 1 00:00:34.333 --> 00:00:38.833 test 2 00:00:38.833 --> 00:00:39.833 test 3 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/10659> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11574(ffplay:new): FFmpeg fails to handle symlinks to video devide
by FFmpeg 13 May '25

13 May '25

#11574: FFmpeg fails to handle symlinks to video devide -----------------------------------+---------------------------------- Reporter: Martmists | Type: defect Status: new | Priority: normal Component: ffplay | Version: 7.1 Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -----------------------------------+---------------------------------- Summary of the bug: On Linux, FFmpeg gives an Invalid argument error trying to playback symlinks to video devices. How to reproduce: I have the following udev rule: {{{ SUBSYSTEM=="video4linux", KERNEL=="video*", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="0893", ATTRS{serial}=="287A4655", SYMLINK+="webcam" }}} This creates a symlink /dev/webcam to, in this case, /dev/video0. {{{ $ readlink /dev/webcam video0 }}} However, FFmpeg fails to play it back: {{{ $ ffplay -v 9 -loglevel 99 /dev/webcam ffplay version n7.1.1 ... Initialized opengl renderer. [AVFormatContext @ 0x728098000c80] Opening '/dev/webcam' for reading [file @ 0x728098001340] Setting default whitelist 'file,crypto,data' [AVIOContext @ 0x728098011540] Statistics: 0 bytes read, 0 seeks /dev/webcam: Invalid argument }}} Using the device it points to works fine, however: {{{ $ ffplay /dev/video0 ... [video playback starts] }}} FFmpeg version: {{{ ffplay version n7.1.1 Copyright (c) 2003-2025 the FFmpeg developers built with gcc 14.2.1 (GCC) 20250207 configuration: --prefix=/usr --disable-debug --disable-static --disable- stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto --enable-fontconfig --enable-frei0r --enable-gmp --enable-gnutls --enable- gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libdav1d --enable-libdrm --enable-libdvdnav --enable-libdvdread --enable-libfreetype --enable-libfribidi --enable- libglslang --enable-libgsm --enable-libharfbuzz --enable-libiec61883 --enable-libjack --enable-libjxl --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libplacebo --enable-libpulse --enable-librav1e --enable-librsvg --enable-librubberband --enable- libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable- libssh --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable- libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpl --enable- libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-nvdec --enable-nvenc --enable-opencl --enable-opengl --enable- shared --enable-vapoursynth --enable-version3 --enable-vulkan libavutil 59. 39.100 / 59. 39.100 libavcodec 61. 19.101 / 61. 19.101 libavformat 61. 7.100 / 61. 7.100 libavdevice 61. 3.100 / 61. 3.100 libavfilter 10. 4.100 / 10. 4.100 libswscale 8. 3.100 / 8. 3.100 libswresample 5. 3.100 / 5. 3.100 libpostproc 58. 3.100 / 58. 3.100 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11574> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11587(avcodec:new): Problem with decoding the APV stream
by FFmpeg 13 May '25

13 May '25

#11587: Problem with decoding the APV stream -------------------------------------+------------------------------------- Reporter: d.kozinski | Type: defect Status: new | Priority: normal Component: avcodec | Version: git- | master Keywords: APV decoder | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- During the decoding of the APV stream, errors occur. Summary of the bug: How to reproduce: {{{ % ffmpeg -i marketplace_1920x1080_400_10-10MB.apv marketplace_1920x1080_400_10.yuv ffmpeg version N-119465-g9980a0b9b1 Copyright (c) 2000-2025 the FFmpeg developers built with gcc 12 (Ubuntu 12.3.0-1ubuntu1~22.04) }}} Console output: {{{ ffmpeg version N-119465-g9980a0b9b1 Copyright (c) 2000-2025 the FFmpeg developers built with gcc 12 (Ubuntu 12.3.0-1ubuntu1~22.04) configuration: --prefix=/home/d.kozinski/ffmpeg_build --extra- libs='-lpthread -lm' --bindir=/home/d.kozinski/ffmpeg_build/bin --enable- ffplay --enable-shared --disable-static --enable-liboapv --enable-gpl --enable-libx264 --enable-libx265 --disable-optimizations --disable-mmx --disable-stripping --extra-cflags=-Og --extra-cflags=-fno-omit-frame- pointer --enable-debug=3 --extra-cflags=-fno-inline libavutil 60. 2.100 / 60. 2.100 libavcodec 62. 3.101 / 62. 3.101 libavformat 62. 0.102 / 62. 0.102 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 0.100 / 11. 0.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 Input #0, apv, from '/home/d.kozinski/Videos/marketplace_1920x1080_400_10-10MB.apv': Duration: N/A, bitrate: N/A Stream #0:0: Video: apv, gray10le(tv), 1920x1080 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 30 tbn File '/home/d.kozinski/Videos/marketplace_1920x1080^C00_10.yuv' already exists. Overwrite? [y/N] y Stream mapping: Stream #0:0 -> #0:0 (apv (native) -> rawvideo (native)) Press [q] to stop, [?] for help [apv @ 0x6500a2d10ea0] Invalid PBU: pbu_size too large (602104 bytes). [apv @ 0x6500a2d10ea0] Failed to parse access unit. [apv @ 0x6500a2d23d90] Out-of-range zero-run value: 63 (at scan pos 7) [apv @ 0x6500a2d23d90] Out-of-range zero-run value: 21 (at scan pos 60) [apv @ 0x6500a2d24e90] Out-of-range zero-run value: 63 (at scan pos 7) [apv @ 0x6500a2d25710] Out-of-range zero-run value: 63 (at scan pos 7) Output #0, rawvideo, to '/home/d.kozinski/Videos/marketplace_1920x1080^C00_10.yuv': Metadata: encoder : Lavf62.0.102 Stream #0:0: Video: rawvideo (Y1[0][10] / 0xA003159), gray10le(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 622080 kb/s, 30 fps, 30 tbn Metadata: encoder : Lavc62.3.101 rawvideo [apv @ 0x6500a2d23d90] Decode errors in 2 tile components. [apv @ 0x6500a2d15720] Out-of-range zero-run value: 63 (at scan pos 7) [apv @ 0x6500a2d15f40] Out-of-range zero-run value: 63 (at scan pos 21) [apv @ 0x6500a2d16760] Invalid PBU: pbu_size too large (602104 bytes). [apv @ 0x6500a2d16760] Failed to read packet. [apv @ 0x6500a2d25710] Decode errors in 1 tile components. [vist#0:0/apv @ 0x6500a2d11380] [dec:apv @ 0x6500a2d13140] Decoding error: Invalid data found when processing input [apv @ 0x6500a2d24e90] Decode errors in 1 tile components. [vist#0:0/apv @ 0x6500a2d11380] [dec:apv @ 0x6500a2d13140] Decoding error: Invalid data found when processing input Last message repeated 1 times [apv @ 0x6500a2d15f40] Decode errors in 1 tile components. [apv @ 0x6500a2d15720] Decode errors in 1 tile components. [vist#0:0/apv @ 0x6500a2d11380] [dec:apv @ 0x6500a2d13140] Decoding error: Invalid data found when processing input Last message repeated 2 times [out#0/rawvideo @ 0x6500a2d11510] video:52650KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.000000% frame= 13 fps=0.0 q=-0.0 Lsize= 52650KiB time=00:00:00.43 bitrate=995328.8kbits/s speed=2.76x elapsed=0:00:00.15 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11587> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11586(undetermined:new): Video decode bug
by FFmpeg 13 May '25

13 May '25

#11586: Video decode bug -------------------------------------+------------------------------------- Reporter: katho3d | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- My old Videos are not decoded correctly, the image is blocky and messed up with FFmpeg based players like VLC. Here is an example image and video: [[Image(https://3dpictureworks.at/download/decode_bug.jpg)]] [https://3dpictureworks.at/download/decode_bug.zip] Thank you! -- Ticket URL: <https://trac.ffmpeg.org/ticket/11586> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11087(ffprobe:new): ffprobe.exe detect MP3-File wrong since Version 6.xx
by FFmpeg 13 May '25

13 May '25

#11087: ffprobe.exe detect MP3-File wrong since Version 6.xx -------------------------------------+------------------------------------- Reporter: Richi | Type: defect Status: new | Priority: normal Component: ffprobe | Version: 6.1.1 Keywords: wrong | Blocked By: detect audioformat | Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: The ffprobe 7.0.1 Version detect sometimes a MP3-File wrong. How to reproduce: .\ffprobe.exe -i "./1.mp3" -print_format json -show_format >"./1.json" Output ffprobe { "format": { "filename": "./1.mp3", "nb_streams": 1, "nb_programs": 0, "nb_stream_groups": 0, "format_name": "vvc", "format_long_name": "raw H.266/VVC video", "size": "575232", "probe_score": 51 } } Input #0, vvc, from './1.mp3': Duration: N/A, bitrate: N/A Stream #0:0: Video: vvc, none, 25 fps, 1200k tbr, 1200k tbn Output ffprobe Version 5.x { "format": { "filename": "./1.mp3", "nb_streams": 1, "nb_programs": 0, "format_name": "mp3", "format_long_name": "MP2/3 (MPEG audio layer 2/3)", "start_time": "0.000000", "duration": "35.952000", "size": "575232", "bit_rate": "128000", "probe_score": 51 } } -- Ticket URL: <https://trac.ffmpeg.org/ticket/11087> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11496(avformat:new): MP3 probed as raw VVC format
by FFmpeg 13 May '25

13 May '25

#11496: MP3 probed as raw VVC format -------------------------------------+------------------------------------- Reporter: Gyan | Type: defect Status: new | Priority: important Component: avformat | Version: git- Keywords: mp3 vvc | master probe regression | Blocked By: Blocking: | Reproduced by developer: 1 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Attached MP3 file is probed to have format "raw H.266/VVC video". Mediainfo detects format correctly. File plays fine. The file has ID3v2 tag at front (6561 bytes). -- Ticket URL: <https://trac.ffmpeg.org/ticket/11496> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11427(avcodec:new): vorbis decoder broken
by FFmpeg 13 May '25

13 May '25

#11427: vorbis decoder broken -------------------------------------+------------------------------------- Reporter: Felix von | Type: defect Leitner | Status: new | Priority: normal Component: avcodec | Version: | unspecified Keywords: vorbis | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Some of my old ogg vorbis files don't play anymore. How to reproduce: {{{ % ffmpeg -i "01 Temptation waits.ogg"/tmp/t.wav ffmpeg version N-118328-g504df09c34 Copyright (c) 2000-2025 the FFmpeg developers built with gcc 14.2.0 (GCC) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --enable-gpl --enable-libx264 --enable-libxvid --enable-libtheora --enable-libmp3lame --enable-pthreads --enable-libvorbis --enable-gpl --enable-postproc --enable-shared --enable-libspeex --enable-nonfree --enable-libvpx --enable-vaapi --extra-cflags=-I/usr/X11R7/include --extra-ldflags='-L/usr/local/lib64 -L/usr/X11R7/lib64' --enable-libopus --enable-libfdk_aac --enable-libx265 --enable-openssl --enable-libaom --enable-libdav1d --enable-librav1e --disable-htmlpages --enable- libfreetype --enable-fontconfig libavutil 59. 55.100 / 59. 55.100 libavcodec 61. 31.101 / 61. 31.101 libavformat 61. 9.106 / 61. 9.106 libavdevice 61. 4.100 / 61. 4.100 libavfilter 10. 6.101 / 10. 6.101 libswscale 8. 13.100 / 8. 13.100 libswresample 5. 4.100 / 5. 4.100 libpostproc 58. 4.100 / 58. 4.100 }}} Decoding works fine if I manually add -c:a libvorbis before the -i -- Ticket URL: <https://trac.ffmpeg.org/ticket/11427> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11557(ffmpeg:new): FFMPEG long load of non-existing_PPS_0_referenced hdhomerun streams
by FFmpeg 13 May '25

13 May '25

#11557: FFMPEG long load of non-existing_PPS_0_referenced hdhomerun streams -------------------------------------+------------------------------------- Reporter: wazer | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: git- Keywords: non- | master existing PPS 0 referenced, no- | Blocked By: frame | Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Takes long time to load streams 5-10 seconds its really periodic, only some channels affected by this, been an ongoing issue for years. How to reproduce: Consistent playing my HDHR channels, {{{ % ffmpeg -v 9 -loglevel 99 -i "http://192.168.1.21:5004/auto/v9" -ss 00:00:0.0 -t 10 -vcodec copy -acodec copy non- existing_PPS_0_referenced.mpeg ffmpeg version 2025-04-23-git-25b0a8e295 built on Windows }}} Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker. -- Ticket URL: <https://trac.ffmpeg.org/ticket/11557> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11357(avcodec:new): H.264 decoder bug on Arm
by FFmpeg 12 May '25

12 May '25

#11357: H.264 decoder bug on Arm -------------------------------------+------------------------------------- Reporter: Bin Peng | Type: defect Status: new | Priority: normal Component: avcodec | Version: git- Keywords: H264 | master decoder | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: When decoding a bitstream with weightb=2 enabled, the output of FFmpeg on ARM and x86 platforms may differ. How to reproduce: {{{ using ffmpeg git-master built on aarch64 and test on aarch64 devices % ffmpeg -i inter_weighted_bipred2.264 -f framemd5 -y md5_arm using ffmpeg git-master built on x86 and test on x86 devices % ffmpeg -i inter_weighted_bipred2.264 -f framemd5 -y md5_x86 md5_arm and md5_x86 would be different, but we expect the same decode result on different CPUs with the same input bit-stream. }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11357> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11583(undetermined:new): ffmpeg with certain files will output getting a 1kB output file
by FFmpeg 10 May '25

10 May '25

#11583: ffmpeg with certain files will output getting a 1kB output file -------------------------------------+------------------------------------- Reporter: Nanasaki | Type: defect Status: new | Priority: important Component: | Version: undetermined | unspecified Keywords: corrupted | Blocked By: output | Blocking: | Reproduced by developer: 1 Analyzed by developer: 1 | -------------------------------------+------------------------------------- Summary of the bug: How to reproduce: {{{ ffmpeg -hide_banner -i 'Solo Leveling S01E07-[1080p][BDRIP][AV1.OPUS].mkv' -map 0:0 -c copy -y out.mkv Reproduced by developer of lossless-cut https://github.com/mifi/lossless-cut/issues/2430#issuecomment-2858320192 file from: https://nyaa.si/view/1891749 or https://www.filemail.com/d/gfjzhhihvfthcum ffmpeg version: n7.1.1-4-gdca3b4760f-20250317 built with gcc 14.2.0 (crosstool-NG 1.27.0.18_7458341) 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 --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-libxml2 --enable-lzma --enable-fontconfig --enable- libharfbuzz --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable- libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable- libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable- libopus --enable-librist --enable-libssh --enable-libtheora --enable- libvpx --enable-libwebp --enable-libzmq --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable- librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable- libsnappy --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable- libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable- libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --disable-libvvenc --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra- cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs=-lgomp --extra- ldflags=-pthread --extra-ldexeflags= --cc=x86_64-w64-mingw32-gcc --cxx=x86_64-w64-mingw32-g++ --ar=x86_64-w64-mingw32-gcc-ar --ranlib=x86_64-w64-mingw32-gcc-ranlib --nm=x86_64-w64-mingw32-gcc-nm --extra-version=20250317 libavutil 59. 39.100 / 59. 39.100 libavcodec 61. 19.101 / 61. 19.101 libavformat 61. 7.100 / 61. 7.100 libavdevice 61. 3.100 / 61. 3.100 libavfilter 10. 4.100 / 10. 4.100 libswscale 8. 3.100 / 8. 3.100 libswresample 5. 3.100 / 5. 3.100 libpostproc 58. 3.100 / 58. 3.100 }}} Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker. -- Ticket URL: <https://trac.ffmpeg.org/ticket/11583> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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