#4954: joint stereo indicator missing from mp3 headers
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Reporter: pico4743 | Owner: (none)
Type: defect | Status: open
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: mp3 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by GraniteStateColin):
Correction to my prior post: While this bug still exists in ffmpeg, I was
wrong about where the problem lies. After looking inside the MP3 files
including with the developer of Mp3tag that reports Joint Stereo output
files as Stereo, we can see the bug, as originally posted by pico4743,
is a better description. Specifically, ffmpeg DOES output to Joint Stereo,
but the header incorrectly says that the file is in Stereo. This confuses
several apps that check the MP3 file for stereo format. SoX and libmp3lame
do not have this problem, it's specific to ffmpeg's implementation and use
of libmp3lame.
The examples in the prior post remain correct to demonstrate the problem,
just that the problem is the reverse of what I had described (which better
aligns with the original poster, @pico4743, who correctly described the
problem as being with the header.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4954#comment:11>
FFmpeg <https://ffmpeg.org>
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