[FFmpeg-trac] #7806(ffmpeg:new): Input seeking seems result in incorrect duration of output file when seeking value is small with -codec copy

[FFmpeg]

#7806: Input seeking seems result in incorrect duration of output file when
seeking value is small with -codec copy
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  vincentkilua                       |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:  seeking      |               Blocked By:
  duration                           |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by vincentkilua):

 The broken image was the duration info of the two output files, as follow.
 {{{
 PS E:\> ffprobe .\output10.mp4
 ffprobe version N-93439-gb073fb9eea Copyright (c) 2007-2019 the FFmpeg
 developers
   built with gcc 8.2.1 (GCC) 20190212
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
 --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
 nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 47.105 / 58. 47.105
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\output10.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.26.101
   Duration: 00:01:01.02, start: 0.000000, bitrate: 3522 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
 bt709), 1920x1080, 3325 kb/s, 25 fps, 25 tbr, 16k tbn, 50 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 191 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 PS E:\> ffprobe .\output15.mp4
 ffprobe version N-93439-gb073fb9eea Copyright (c) 2007-2019 the FFmpeg
 developers
   built with gcc 8.2.1 (GCC) 20190212
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
 --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
 nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 47.105 / 58. 47.105
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\output15.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.26.101
   Duration: 00:01:00.81, start: 0.000000, bitrate: 3605 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
 bt709), 1920x1080, 3406 kb/s, 25 fps, 25 tbr, 16k tbn, 50 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 193 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7806#comment:1>
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