[FFmpeg-trac] #2080(undetermined:new): Conversion of some .wtv files to .mpg produces unplayable file

FFmpeg trac at avcodec.org
Sun Dec 30 07:03:30 CET 2012

#2080: Conversion of some .wtv files to .mpg produces unplayable file
             Reporter:  peterdeg     |                     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: Using Windows 8 Pro with Media Center to record
 digital TV. FFmpeg is then used to convert the .wtv files to .mpg using
 "-vcodec copy -acodec copy" options for playback on a PS3.
 Some (not all) recordings from one TV station do not convert properly
 (have not encountered the problem with any other station.
 When attempting to play the file using Media Player, it freezes at the
 first frame. When playing on a PS3, the video plays correctly but there is
 no audio.
 The conversion produces "mpeg_decode_postinit() failure" errors. Modifying
 analyzeduration and probesize does not remove the error.
 How to reproduce:
 ffmpeg.exe -y -i "Pat Callinan's 4x4 Adventures_Ten
 Digital_2012_12_23_11_57_18.wtv" -vcodec copy -acodec copy -f dvd "Pat
 Callinan's 4x4 Adventures_Ten Digital_2012_12_23_11_57_18.mpg"

 ffmpeg version N-47062-g26c531c Copyright (c) 2000-2012 the FFmpeg
   built on Nov 25 2012 12:25:21 with gcc 4.7.2 (GCC)}}}

 I have a sample .wtv file cut down to 10MB. When I convert the sample to
 .mpg, it does play on Media Player but without sound.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2080>
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