[FFmpeg-trac] #5418(undetermined:new): lagarith decoding, missing frames

FFmpeg trac at avcodec.org
Sun Apr 10 12:25:39 CEST 2016


#5418: lagarith decoding, missing frames
-------------------------------------+-------------------------------------
             Reporter:  Selur        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  lagarith     |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 ffmpeg drops frames instead of 2334 frames the output only contains, 2296
 frames when decoding (one second missing)

 How to reproduce:
 {{{
 % ffmpeg -y -threads 8 -i "ng2.avi" -map 0:0 -an -sn -vsync 0 -r
 6010000/100000  -pix_fmt yuv420p  -strict -2 -f yuv4mpegpipe "ng2.y4m"
 }}}
 source: http://www.embedupload.com/?d=5WBPUXJXBF
 ffmpeg version used:
 {{{
 ffmpeg version N-79276-g679ae5b-gb0c026a+1 Copyright (c) 2000-2016 the
 FFmpeg developers
   built with gcc 5.3.0 (Rev5, Built by MSYS2 project)
   configuration:  --disable-w32threads --enable-fontconfig --enable-gcrypt
 --enable-libass --enable-libbluray --enable-libbs2b --enable-libfreetype
 --enable-libfribidi --enable-libkvazaar --enable-libmp3lame --enable-
 libopus --enable-libsoxr --enable-libspeex --enable-libtwolame --enable-
 libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-
 libxvid --enable-libzimg --enable-libzvbi --enable-avisynth --enable-gpl
 --disable-debug
   libavutil      55. 20.100 / 55. 20.100
   libavcodec     57. 34.100 / 57. 34.100
   libavformat    57. 32.100 / 57. 32.100
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 41.100 /  6. 41.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 }}}

 Checked the original frame count using the vfw decoder on Windows.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5418>
FFmpeg <https://ffmpeg.org>
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