[FFmpeg-devel] [PATCH v5] lavf/matroskadec: A_QUICKTIME and AV_CODEC_ID_NONE

Mats Peterson matsp888 at yahoo.com
Thu Jan 7 04:12:42 CET 2016


On 01/06/2016 04:32 AM, Mats Peterson wrote:
> In many older QuickTime files, the audio format, or "fourcc", is
> 0x00000000 (AV_CODEC_ID_NONE). The QuickTime File Format Specification
> states the following regarding this situation:
>
> "This format descriptor should not be used, but may be found in some
> files. Samples are assumed to be stored in either 'raw ' or 'twos'
> format, depending on the sample size field in the sound description."
>
> MPlayer handles this logic by itself, but FFmpeg/FFplay currently does
> not.
>
> Mats
>
>
>
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>

Michael?

-- 
Mats Peterson
http://matsp888.no-ip.org/~mats/


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