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

av_assert2().

Although AC-3 allows it, it's not very useful. The encoder uses the same code
for all full-bandwidth channels.

It was only needed at low bitrates, which now already use a low bandwidth, so
the bandwidth reduction is no longer needed.

av_assert2().

This can occur in some very rare cases with low bitrates.

on exponent group sizes.

This works around a possibly exploitable crash.
Appearently, vlc can be exploited with a malicous file. This should get
reverted as soon as a proper fix is found.

Reported-at: Thu, 21 Apr 2011 14:38:25 +0000
Reported-by: Dominic Chell <Dominic.Chell@ngssecure.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 89f903b3)
(cherry picked from commit 9b919571e506fbb72b81a35ca1e7c1bd6efc4209)

As per issue2629, most 23.976fps matroska H.264 files are incorrectly
detected as 24fps, as the matroska timestamps usually have only
millisecond precision.

Fix that by doubling the amount of timestamps inspected for frame rate
for streams that have coarse time base. This also fixes 29.970 detection
in matroska.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 78431098)

Tested with mplayer based on this report
http://thread.gmane.org/gmane.comp.video.mplayer.user/66043/focus=66063Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Prevent competing threads from overwriting (shared) buffers.

Original patch by: Michael Niedermayer <michaelni@gmx.at>

int/unsigned is the natural memory access type for CPUs, using sized types
for temporary variables, counters and similar just increases code size and
can possibly cause a slowdown.

While deprecated, they're totally useless as long as their values
are different from the AVIO_FLAG values that are used internally.
Currently, this leads to old libav applications still compiling
correctly (since we haven't removed the fallback wrappers), but
failing since the functions internally compare to the new AVIO_FLAG
values.

These should be removed at some point, but they aren't removed yet.
The intent is to be able to recompile an old application against
the new ABI without modifying the code, and this doesn't work
currently.
Signed-off-by: Martin Storsjö <martin@martin.st>

Make av_get_profile_name() return NULL if no profile is detected.

Fix trac issue #130, fix crash reading file tek3.m2v.
(cherry picked from commit e5d80c7b)
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Previously, the function would lead to an infinite wait (by
returning AVERROR(EAGAIN)) on sockets indicating an error
via either of these poll flags.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

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

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

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

Do not print the results of the conditional call to av_log_ask_for_sample()
into the same line as the main output, separate the already long text.

non-zero, set channels based on channel_layout.

This allows the user to set only channel_layout and not channels.

non-zero, check to make sure they do not contradict eachother.