[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
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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 |
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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
loop?
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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