[FFmpeg-trac] #7954(avformat:new): MP2 audio files "Header missing" and audio drops
FFmpeg
trac at avcodec.org
Sat Jun 15 13:19:35 EEST 2019
#7954: MP2 audio files "Header missing" and audio drops
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Reporter: renaud.s | Owner:
Type: defect | Status: new
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: mp2 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by renaud.s):
I am not sure what originally produced this file. More likely a
professional broadcast radio automation system. It is not clear to me what
exactly the Musicam format is. Wikipedia says: "MP2, sometimes incorrectly
called Musicam or MUSICAM". Maybe just an umbrella term for a set of
standards.
Coming back to playing these files correctly and with all respect for the
amazing FFmpeg project, I guess in short time frame my best bet is to use
libmpg123 ?
There is seem to be no occurrence of the string "musicam" in libmpg123
source code so I guess they aren't doing anything specific with it,
probably just ignore it.
For my understanding, you changed the component to avformat, I suppose
because you mean we need another demuxer but actually the "Header missing"
is situated in \libavcodec\mpegaudiodec_template.c, reason why I though it
was related to avcodec. I had the feeling that the files are correctly
demuxed but sometimes improperly decoded due to a "malformed" mpeg header.
What do you think ?
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Ticket URL: <https://trac.ffmpeg.org/ticket/7954#comment:3>
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