#3473: wtv muxer does not check H.264 streams for startcode
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Reporter: ramitbhalla | Owner:
Type: defect | Status: open
Priority: minor | Component: avformat
Version: git-master | Resolution:
Keywords: wtv | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 1 |
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Changes (by pross):
* analyzed: 0 => 1
Comment:
(Perhaps a better fault description would be "wtv muxer discards
extradata, resulting in unplayable files")
Analysis:
The test file linked here (#3474.mp4) has H264 extradata containing
startcode information, but the WTV muxer discards codec extradata when
using -vcodec copy. The resulting file will not play back in FFmpeg or
WMP.
Solution:
Will need to investigate whether/how the WTV format actually supports the
extradata concept. And if not, insert the startcode information as a
packet _or_ auto apply bitstream filter.
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Ticket URL: <https://trac.ffmpeg.org/ticket/3473#comment:6>
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