On Fri, Jan 08, 2016 at 01:03:05PM +0100, Mats Peterson wrote: > 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 > not. > > Mats > > -- > Mats Peterson > http://matsp888.no-ip.org/~mats/
> matroskadec.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > 7a07b5c37987840d4cccc3a2710c854316bb31c1 > 0001-lavf-matroskadec-A_QUICKTIME-and-fourcc-0x00000000.patch > From d8507d9b0645585d2d27c614f1f7d3347edf8733 Mon Sep 17 00:00:00 2001 > From: Mats Peterson <matsp...@yahoo.com> > Date: Fri, 8 Jan 2016 12:55:59 +0100 > Subject: [PATCH v6] lavf/matroskadec: A_QUICKTIME and fourcc 0x00000000 > > 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 > not. > > Mats > > --- > libavformat/matroskadec.c | 9 +++++++++ > 1 file changed, 9 insertions(+) applied thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB DNS cache poisoning attacks, popular search engine, Google internet authority dont be evil, please
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