[FFmpeg-trac] #2254(avcodec:new): Unsupported h264 file

FFmpeg trac at avcodec.org
Tue Apr 23 01:43:48 CEST 2013

#2254: Unsupported h264 file
             Reporter:  cehoyos      |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  h264 mpegts  |               Blocked By:
  videolan                           |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |

Comment (by michael):

 Replying to [comment:3 cehoyos]:
 > I only have the information provided in these tickets:
 > https://trac.videolan.org/vlc/ticket/8145
 > https://trac.videolan.org/vlc/ticket/8235
 > I did not find another source for the claim "when Taiwan TV shift from
 analog to digital, many set-top-box can't decoding TTVHD" and I don't
 understand "but when I record TTV HD progam only by command line,it can't
 play properly".
 > In any case, Windows Media Player shows a recognizable video, so I
 believe decoding can be improved even if the sample is broken.

 You misunderstand i think.
 There are several possible explanations
 A. this file is missing 50% of the data and the software used to store it
 has or had a serious bug
 B. The file is not h264 but a non standard variant of it that looks like
 h264 with half the data missing
 C. something else

 what indication do we have that its not A. ?
 can something display this video without heavy artifacts ?
 has someone dumped the raw ts stream without any complex software in the
 does the filesize match the expected duration and bitrate or is it half of
 that ?

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2254#comment:4>
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