Useful for dealing with constant frame-rate video.

(cherry picked from ffmpeg commit 722762f7)

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

(cherry picked from ffmpeg commit 7cd5fa35)

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

(cherry picked from ffmpeg commit 31619584)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

(cherry picked from ffmpeg commit 0d249316)

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

(cherry picked from ffmpeg commit 9ca44067)

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

(cherry picked from ffmpeg commit 7b42036b)

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

All encoders set pts and dts properly now (and have been doing that for
a while), so there is no good reason to do any timestamp guessing in the
muxer.

The newly added AVStreamInternal will be later used for storing all the
private fields currently living in AVStream.

It will be needed in other functions.

The reasoning for setting it to zero only applies to demuxing.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Fixes libavcodec/vdpau.c:282:5: warning:
    "CONFIG_H263_VDPAU_HWACCEL" is not defined [-Wundef]

Removed in d35d0c72.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This seems not to do anything any more since a long time, and removing
it avoids using uninitialized memory. Also change the error value
forwarding as done everywhere else.

Partly fixes: msan_uninit-mem_7fb7d24780d0_2744_R03T.CAK
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Calculation of x an y based on width and height did not work when
width == 0 or height == 0.  "0" substitutes the input width and
height, but did so too late for x, y expression evaluation.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Bug-Id: 911

I've got some m4a samples that had jpeg cover art marked as png. Since
these files were supposedly written by iTunes, and other software can
read it (e.g. clementine does), this should be worked around.

Since png has a very simple to detect header, while it's apparently a
real pain to detect jpeg in the general case, try to detect png and
assume jpeg otherwise. Not bothering with bmp, as I have no test case.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Otherwise flashsv2_prime could be fed random data.

Bug-Id: 908
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The variable skip contains the expected size in bytes.

Bug-Id: 906
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Bug-Id: 905
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

And prevent a memory leak

CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Bug-Id: 903
CC: libav-stable@libav.org
Reported-By: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

All the values are unsigned.

Bug-Id: 907
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Some codecs use the codec_tag to signal specific information and
picking the first one would lead to a broken file.

Bug-Id: 883
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

At least on AIX it conflicts with the close() libc function from unistd.h.

This fixes building on older mingw (both mingw.org and mingw64;
mingw64 from before May 2011).

Signed-off-by: Martin Storsjö <martin@martin.st>

In order to load libraries in Android they need to be unversioned.
The android target section was derived from the BSD ones, and they
that simply drop the SONAME

Android M requires to have a SONAME entry but unversioned.

The VDPAU API never explicitly supported H.263 in the first place.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Previously the message was cut off at 256th byte.
This will allow dumping the complete x264 encode info when needed.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Drop the need of setting -debug bugs since it's not a bug, and the
message is already under a AV_LOG_DEBUG log level. Instead only print
it when there is an actual string in it.

Use optional sTER chunk defining side-by-side stereo pair
within "Extensions to the PNG 1.2 Specification", version 1.3.0.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Some systems may be lacking getservbyport; the previous ifdef wasn't
quite enough since it still assumed that struct servent was defined,
as pointed out by Clément Gregoire.

Simply remove the possibility to return non-numeric services in
getnameinfo; no caller of getnameinfo within libavformat
currently try to use getnameinfo for retrieving the port number without
NI_NUMERICSERV, and falling back on getservbyport may be non-threadsafe.

Signed-off-by: Martin Storsjö <martin@martin.st>

This silences warnings like this one:
libavformat/file.c(62) : warning C4996: 'read': The POSIX name for this
item is deprecated. Instead, use the ISO C++ conformant name: _read.
See online help for details.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This allows enabling the frame skipping, which is required for the
encoder to properly hit the target bitrate.

Signed-off-by: Martin Storsjö <martin@martin.st>