Originally, AVFormatContext and a metadata dict were provided to ff_vorbis_comment(),
but this presented issues if an AVStream was being updated or the metadata on
AVFormatContext wasn't actually being updated. To remedy this, ff_vorbis_stream_comment()
explicitly updates a stream's metadata and sets any necessary flags.

ff_vorbis_comment() does not modify any flags, and any calls to it that update
AVFormatContext's metadata (just a single call) must also update
AVFormatContext.event_flags after detecting any metadata changes to the provided
dictionary, as signaled by a positive return value.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

It is commonly stored in a vorbiscomment block in codec private data.

Fixes a potential divide by zero.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

Makes no difference in outcome, as the checks on t have no effect
when t was uninitialized

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7fa2b7b5d97c_3598_anOTHERS_DixX_in_Ogg_Sample.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f4d0daad100_3599_anOTHERS_DixX_in_Ogg_Sample.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

Not having the header for a codec is a tell-tale of a broken file.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Bug introduced by libav in 1bb3990bSigned-off-by: Michael Niedermayer <michaelni@gmx.at>

Demuxers are not supposed to set it.

This needs the extradata to be extracted.
The approach used is the one MPlayer uses, though it is
unclear whether the 4 bytes extradata that are skipped
should be skipped always or only for AAC.
The AAC parser must be disabled, too, otherwise playback
still does not work.
Fixes trac issue #547.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

It's supposed to be called only from (de)muxers.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Patch by Jean-Daniel Dupas, devlists shadowlab org

Originally committed as revision 22744 to svn://svn.ffmpeg.org/ffmpeg/trunk

is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22493 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22476 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22475 to svn://svn.ffmpeg.org/ffmpeg/trunk

Fixes issue251

Originally committed as revision 20815 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Daniel Verkamp, aniel drv nu

Originally committed as revision 19254 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18494 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 15784 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 14951 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 14948 to svn://svn.ffmpeg.org/ffmpeg/trunk

fixes issue165.

Originally committed as revision 13407 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11763 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11698 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11002 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 10943 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 9529 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 9525 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5720 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5367 to svn://svn.ffmpeg.org/ffmpeg/trunk