[FFmpeg-devel] ogg audio muxing bug and patch

[Alex Balk]

Attached patch fixes an int<-->uint bug affecting muxing of ogg audio.

This line is the problem:
https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/oggparsevorbis.c#L476

You can see in:
https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/oggdec.h#L68 that
`os->pduration` is an `unsigned int`, but over at
https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/oggparsevorbis.c#L409
the `duration` local is just an `int`...  So when `duration` is negative,
it's getting converted to a large positive 32-bit unsigned int.


ab
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