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| author | Alex Converse <alex.converse@gmail.com> | 2012-01-24 18:43:43 -0800 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2012-04-01 18:33:26 +0200 |
| commit | 0fbde741cbca76e826d0dce446480b02da5f6706 (patch) | |
| tree | c0a4a84fb2c7cf7f6f41bafd0b31c8346d956aba /libavcodec/mpeg4video_parser.c | |
| parent | ec961c89194aa090ab39f2cd4336479c909e532b (diff) | |
| download | ffmpeg-0fbde741cbca76e826d0dce446480b02da5f6706.tar.gz | |
wma: Clip WMA1 and WMA2 frame length to 11 bits.
The MDCT buffers in the decoder are only sized for up to 11 bits. The
reverse engineered documentation for WMA1/2 headers say that that for
all samplerates above 32kHz 11 bits are used. 12 and 13 bit support
were added for WMAPro. I was unable to make any Microsoft tools generate
a test file at a samplerate above 48kHz.
Discovered by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
(cherry picked from commit d78bb1a4b2a3a415b68e4e6dd448779eccec64e3)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
Diffstat (limited to 'libavcodec/mpeg4video_parser.c')
0 files changed, 0 insertions, 0 deletions