[FFmpeg-trac] #1965(avformat:open): mmf: support correctly formats ma-3/5/7
FFmpeg
trac at avcodec.org
Sun Oct 18 08:06:22 EEST 2020
#1965: mmf: support correctly formats ma-3/5/7
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Reporter: ami_stuff | Owner:
Type: defect | Status: open
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: adpcm smaf | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 1 |
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Changes (by zane):
* analyzed: 0 => 1
* cc: zane@… (added)
Comment:
I've just had a look at the spec
(http://read.pudn.com/downloads34/sourcecode/comm/mms/107584/SMAF3.06e.pdf),
and I'm pretty sure what's being heard when the checks are removed is the
"Score Track Stream PCM Data Chunk" (Mtsp) part of the MTR chunk.
There's a bit of static at the start too, which suggests that's the rest
of the chunk being decoded as adpcm.
I'd be inclined to say the current behaviour is correct.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/1965#comment:7>
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