#9412: HEVC fails to seek on keyframe -----------------------------------+-------------------------------------- Reporter: SuRGeoNix | Type: defect Status: new | Priority: important Component: avformat | Version: git-master Keywords: hevc seek | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -----------------------------------+-------------------------------------- I'm using av_seek_frame and even if it returns 0 pb will not be at an actual keyframe. The issues seems to happen with any HEVC/mpeg-ts format container. [Format ] MPEG-TS (MPEG-2 Transport Stream)/mpegts [Video #0] hevc yuv420p10le 3840x2160 @ 59,94 [Audio #1-eng] aac fltp@0 48KHz stereo I've tested also with ffplay which fails as well with the following output {{{ C:\Users\Owner\Downloads\ffmpegmb\bin>ffplay.exe -ss 00:01:00 -analyzeduration 100000000000 -probesize 100000000000 "c:\root\down\samples\hd\LG Chess 4K Demo.ts" ffplay version N-103543-gc655a734b1-20210907 Copyright (c) 2003-2021 the FFmpeg developers built with gcc 10-win32 (GCC) 20210408 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-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libvmaf --enable-vulkan --disable-libxcb --disable-xlib --enable- amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libglslang --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --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 --disable-libdrm --disable-vaapi --enable-libvidstab --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=20210907 libavutil 57. 4.101 / 57. 4.101 libavcodec 59. 7.102 / 59. 7.102 libavformat 59. 5.100 / 59. 5.100 libavdevice 59. 0.101 / 59. 0.101 libavfilter 8. 7.101 / 8. 7.101 libswscale 6. 1.100 / 6. 1.100 libswresample 4. 0.100 / 4. 0.100 libpostproc 56. 0.100 / 56. 0.100 [mpegts @ 00000282a0400480] stream 0 : no PTS found at end of file, duration not set Input #0, mpegts, from 'c:\root\down\samples\hd\LG Chess 4K Demo.ts': Duration: 00:01:52.92, start: 1.066722, bitrate: 62572 kb/s Program 1 Stream #0:0[0x101]: Video: hevc (Main 10) ([36][0][0][0] / 0x0024), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn Stream #0:1[0x102](und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 383 kb/s [aac @ 00000282a5beb040] channel element 0.0 is not allocated [hevc @ 00000282a8b2d040] Could not find ref with POC 15 0B f=0/0 [hevc @ 00000282a8b2d040] Could not find ref with POC 13 [hevc @ 00000282a8b2d040] Could not find ref with POC 17 [hevc @ 00000282a8b2d040] Could not find ref with POC 21 [hevc @ 00000282a8b2d040] Could not find ref with POC 28 0B f=0/0 62.26 A-V: -0.025 fd= 3 aq= 47KB vq=11446KB sq= 0B f=0/0 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/9412> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker