Benjamin Larsson <ba...@ludd.ltu.se> added the comment:

Carl Eugen Hoyos wrote:
> Carl Eugen Hoyos <ceho...@rainbow.studorg.tuwien.ac.at> added the comment:
>
> Please do not raise the priority (unless this is a regression and you can 
> point
> to the responsible version).
> Banan, is this a reproduced issue?
>
>   

I just assumed based on this line:

 "Uncompressed PCM" and the FourCC code is the corresponding 0xfffe tag.

If it is true it is caused by channels > 2 and channel_layout!=NULL.
The guilty code is here:

http://git.ffmpeg.org/?p=ffmpeg;a=blob;f=libavformat/riff.c;h=74d3908b693a18ed7472d2783e27d2d17fd6d442;hb=HEAD#l298

The line:

waveformatextensible = enc->channels > 2 && enc->channel_layout;

should include a check for the output format also so that 
waveformatextensible is only true when the output format is wave.
And this is most likely a regression in avi muxing, it would have worked 
before.

MvH
Benjamin Larsson

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