#10804: Wrong packet/frame duration in some H264 video -------------------------------------+------------------------------------- Reporter: Laura Crema | Type: defect Status: new | Priority: normal Component: | Version: 6.1 undetermined | Keywords: h264 | Blocked By: pkt_duration | Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Respect v. 4.3, in version 6.1 I got a wrong packet duration in some H264 video. It happens only on some files, How to reproduce: {{{ % ffprobe.exe -show_frames -select_streams 0 test.mp4 ffprobe version N-112960-g96f646cdc2-20231212 Copyright (c) 2007-2023 the FFmpeg developers built with gcc 13.2.0 (crosstool-NG 1.25.0.232_c175b21) 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-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --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 --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-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-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable- libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable- libxvid --enable-libzimg --enable-libzvbi --extra- cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20231212 libavutil 58. 32.100 / 58. 32.100 libavcodec 60. 35.100 / 60. 35.100 libavformat 60. 18.100 / 60. 18.100 libavdevice 60. 4.100 / 60. 4.100 libavfilter 9. 14.100 / 9. 14.100 libswscale 7. 6.100 / 7. 6.100 libswresample 4. 13.100 / 4. 13.100 libpostproc 57. 4.100 / 57. 4.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Z:\VIDEO\PAL\ONLINE\JanaTolqyn_BG_Koktem_2_03.03.2023.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: mp42mp41 creation_time : 2023-03-03T05:46:03.000000Z Duration: 00:00:10.00, start: 0.000000, bitrate: 15900 kb/s Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 15532 kb/s, 25 fps, 25 tbr, 25k tbn (default) Metadata: creation_time : 2023-03-03T05:46:03.000000Z handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : AVC Coding Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default) Metadata: creation_time : 2023-03-03T05:46:03.000000Z handler_name : #Mainconcept MP4 Sound Media Handler vendor_id : [0][0][0][0] }}} This is the result: {{{ [FRAME] media_type=video stream_index=0 key_frame=1 pts=0 pts_time=0.000000 pkt_dts=0 pkt_dts_time=0.000000 best_effort_timestamp=0 best_effort_timestamp_time=0.000000 pkt_duration=500 pkt_duration_time=0.020000 duration=500 duration_time=0.020000 pkt_pos=61496 pkt_size=259128 width=1920 height=1080 ... [/FRAME] [FRAME] media_type=video stream_index=0 key_frame=0 pts=1000 pts_time=0.040000 pkt_dts=1000 pkt_dts_time=0.040000 best_effort_timestamp=1000 best_effort_timestamp_time=0.040000 pkt_duration=500 pkt_duration_time=0.020000 duration=500 duration_time=0.020000 pkt_pos=493193 pkt_size=39086 width=1920 height=1080 ... [/FRAME] [FRAME] media_type=video stream_index=0 key_frame=0 pts=2000 pts_time=0.080000 pkt_dts=2000 pkt_dts_time=0.080000 best_effort_timestamp=2000 best_effort_timestamp_time=0.080000 pkt_duration=500 pkt_duration_time=0.020000 duration=500 duration_time=0.020000 pkt_pos=532279 pkt_size=41132 width=1920 height=1080 ... [/FRAME] .... }}} pkt_duration and duration should be 1000 (as with version 4.3), instead I got 500 -- Ticket URL: <https://trac.ffmpeg.org/ticket/10804> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker