[FFmpeg-devel] [PATCH v2] lavf/mov: Audio and AV_CODEC_ID_NONE
matsp888 at yahoo.com
Thu Jan 7 04:14:07 CET 2016
On 01/05/2016 06:45 AM, Mats Peterson wrote:
> Simplified the patch somewhat. Description follows:
> 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
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> ffmpeg-devel at ffmpeg.org
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