[FFmpeg-devel] [PATCH] lavf/matroskadec: Set A_QUICKTIME bit depth

Mats Peterson matsp888 at yahoo.com
Wed Jan 13 08:35:26 CET 2016

On 01/13/2016 12:30 AM, Mats Peterson wrote:
> Since mkvmerge doesn't set the bit depth for A_QUICKTIME audio (as far
> as I know), the track->audio.bitdepth variable will be zero, and its
> value needs to be retrieved from the sound sample description. Also,
> confine the 0x00000000 to 'raw '/'twos' fourcc mapping to old version 0
> sound sample descriptions, since they are the only valid sample
> descriptions for this type of mapping.
> Mats

I should add that I've limited the setting of track->audio.bitdepth to 
version 0 sound sample descriptions only, since as they can only contain 
8- or 16-bit uncompressed data, setting it here will properly reflect 
the "real" bit depth. The bit depth of version 1 sound sample 
descriptions can be larger than 16 bits.


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