As the name indicates we can't just assume what the
"opaque" field contains.
This fixes a crash in third-party applications see e.g.:
http://bugzilla.mplayerhq.hu/show_bug.cgi?id=2126

This fixes also FFmpeg trac #2293, which is a different
third-party application.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Useful for testing seek implementations.

Fix trac ticket #2139.

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This allows more complete checks

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Otherwise even a tiny file can trigger a huge memory allocation.

Related to ticket #2298.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

This significantly reduces the memory needed per AVStream when the
array is not needed.

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

Fixes out of array accesses

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

Fixes second part of Ticket2292

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

Fixes Ticket2292

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

CC:libav-stable@libav.org

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

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

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

This was broken since 1f265f52.

Implemented since 624fb5f9.

This also makes the changes of a3949fe11 applicable in both cases.

Fixes read after free.

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

Avoid to write more than one cuepoint per track and PTS in
mkv_write_cues(). This avoids a later assertion failure on "(bytes >=
needed_bytes)" in put_ebml_num() called from end_ebml_master(), in case
there are several cuepoints per track with the same PTS.

This may happen with files containing packets with duplicated PTS in the
same track.

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

Fixes Assertion failure

Found-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes out of array read

Found-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit 620b88a302.

Fixes ticket #2272.

Conflicts:
	libavformat/swfenc.c

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

Also cleanup exported symbols

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

Removing accidentally added include file.

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Adding support for parsing AlphaMode element in the Track header
and export that information as a metadata tag. This flag indicates
presence of alpha channel data in BlockAdditional element.

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Other software does not store it in this case, and the information
is provided by the codec stream

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

The QuickTime specification does not contain any hint that the atom
must not be written in some cases and both the QuickTime and the
AVID decoders do not fail if the atom is present.

This change allows to signal (visually) interlaced streams with
a codec different from uncompressed video.

As a side-effect, this fixes ticket #2202

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

Matroska specification lists support for BlockAdditional element
which is not supported by ffmpeg's matroska parser. This patch
adds grammar definitions for parsing that element (and few other
related elements) and then puts the data in AVPacket.side_data
with new AVPacketSideDataType AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL.

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #2198

Also return meaningful error code.

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

Some real codecs are supported by the matroska specification
(and FFmpeg's matroska demuxer) but not the FFmpeg muxer.

Yes, these files do exist

Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

In some ASF files this objects holds cover art and other tags. Compared to
Metadata Object it can also hold GUIDs, but we ignore these for now.

Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Use the same get_tag()/get_value() as for the Extended Content Description
but handle the 16 bit vs 32 bit difference for type 2 (BOOL)

Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>