[FFmpeg-devel] [PATCH v6] lavf/matroskadec: A_QUICKTIME and fourcc 0x00000000

Mats Peterson matsp888 at yahoo.com
Fri Jan 8 13:03:05 CET 2016

In many older QuickTime files, the audio format, or "fourcc", is
0x00000000. 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


Mats Peterson
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-lavf-matroskadec-A_QUICKTIME-and-fourcc-0x00000000.patch
Type: text/x-patch
Size: 1782 bytes
Desc: not available
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20160108/7b2dee5a/attachment.bin>

More information about the ffmpeg-devel mailing list