Blocks are marked as key frames whenever the "reference" field is
zero. This breaks for non-keyframe Blocks with a reference timestamp
of zero.
The likelihood of reference timestamp being zero is increased by a
longstanding bug in muxing that encodes reference timestamp as the
absolute time of the referenced frame (rather than relative to the
current Block timestamp, as described in MKV spec).
Now using INT64_MIN to denote "no reference".
Reported to chromium at http://crbug.com/497889 (contains sample)
(cherry picked from commit ac25840ee32888f0c13118edeb9404a123cd3a79)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Unrecognized streams are not allocated
Fixes: flicker-1.color1.vp91447030769.08.webm
Found-by: Chris Cunningham <chcunningham@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a5034b324cad4c29d47ef285a30b0705e6eb0384)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
And default to 8000 if it is invalid.
An invalid sample rate can trigger av_assert2 in av_rescale_rnd.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit 5b76c82fd7a5f4f36bb901b8c43d7f7319599599)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
In the TTA extradata re-construction the values are written with
avio_wl16 and if they don't fit into uint16_t, this triggers an
av_assert2 in avio_w8.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit 92e79a2f7bf2f8bb0cb2d1a3e4d76737557071c4)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The later is not correct
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 5d309d309108684f742bbf5fc2393f1c519cda72)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This fixes a segmentation fault.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit e54540655f229d06667dc7fa7005f2a20e101e80)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
index_scale is set to matroska->time_scale of type uint64_t.
When index_scale is int, the assignment can overflow and e.g. result
in index_scale = 0. This causes a floating point exception due to the
division by index_scale.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit eb9fb508b0e09d85d234fe694333b2005e1d7a7e)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Fixes CID703652
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 171af59d58fc67d82dce8ff7ed11fa671108baa5)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
CC: libav-stable@libav.org
Signed-off-by: Anton Khirnov <anton@khirnov.net>
(cherry picked from commit b8d7f3186e86234f6255f5e8ee9e98573b4d9a6e)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit fc3cdb00d084222a107e61e7168903bf3d3d0b47)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
In matroska_read_seek(), |tracks| is assigned at the begining of the
function. However, functions like matroska_parse_cues() could reallocate
the tracks and invalidate |tracks|.
This assigns |tracks| only before using it, so that it will not get
invalidated elsewhere.
Bug-Id: chromium/427266
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 6e70e4aca50696040cc9256ec96e5c31d9641432)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
When matroska_execute_seekhead() is called, it goes through the list of
seekhead entries and attempts to read elements not read yet. When doing
this, the parser can find further SeekHead elements, and will extend the
matroska->seekhead list. This can lead to a (practically) infinite loop
with certain broken files. (Maybe it can happen even with valid files.
The demuxer doesn't seem to check correctly whether an element has
already been read.)
Fix this by ignoring elements that were added to the seekhead field
during executing seekhead entries.
This does not fix the possible situation when multiple SeekHead elements
after the file header (i.e. occur after the "before_pos" file position)
point to the same elements. These elements will probably be parsed
multiple times, likely leading to bugs.
Fixes ticket #4162.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 6551acab6877addae815decd02aeca33ba4990c8)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Convert the Matroska stereo format to the Stereo3D format, and add a
Stereo3D side data to the stream.
Bump the doctype version supported.
Bug-Id: 728 / https://bugs.debian.org/757185
Convert the Matroska stereo format to the Stereo3D format, and add a
Stereo3D side data to the stream.
Bump the doctype version supported.
Bug-Id: 728 / https://bugs.debian.org/757185
Ensure that cues_start and cues_end are always initialized and
the webm_dash_manifest_cues function returns appropriate error if
they are not computed correctly.
This fixes coverity defect CID1231991.
Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Add functions and logic to matroskadec for use by the WebM DASH Manifest
XML Muxer. The actual muxer is added in a future patch.
Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This typo has existed since this code was added in c16582579.
Newer versions of clang pointed out that this comparison always
was true (since the result of the negation is either 0 or 1, while
AVDISCARD_ALL has the value 48).
Signed-off-by: Martin Storsjö <martin@martin.st>
* commit '4efdadc8ec50332c812e8a95e8c67f5a260e7cb0':
matroskadec: export just the STREAMINFO block as FLAC extradata
Conflicts:
libavformat/matroskadec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '6df478bf891b9fc5626e4a0b993899f310ba0a1c':
matroskadec: split parsing tracks into a separate function
Conflicts:
libavformat/matroskadec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
