The issue affects dvdsub subtitles (a.k.a. VOBSUB).

Some players -- in particular hardware players -- cut off
the lowest row of pixels if the number of rows in the subtitle
is odd.

The patch below implements a work-around for that.  If the
number of rows is odd, it is simply rounded up to an even
number, adding an invisible (i.e. fully transparent) row.
The work-around can be enabled or disabled with a new
option -even_rows_fix.  The default is disabled, so there
is no change of behaviour for users who don't care about it.

The overhead for the fix is low, and in many cases even zero:
For subtitles with an odd number of rows (i.e. in 50% of
cases on average), the size increases by two bytes because
a fully transparent row is encoded as 0x00 0x00.  However,
in the VOBSUB standard, all data packets are padded to 2KB
anyway, so in most cases the additional bytes just use some
part of the padding, so there is no overhead.  Only in the
rare case that the 2KB boundary is hit (0.1% chance), a full
2KB block is added.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes assertion failure with vdpau and vlc
Fixes Ticket3742

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

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

Fixes Ticket3746
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Also support changing arrow head/tail shape
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes timestamps

Based-on: code from pulseaudio
Reviewed-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Set the ACLR atom appropriately for legal / full range.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It causes portability issues, and would need ifdef hell if its kept

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

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

AVFormatContext->priv_data is not always a MpegTSContext, it can be
RTSPState when decoding a RTP stream. So it is necessary to pass
MpegTSContext pointer explicitly.

This fixes memory corruption from bug #3721 (RTSPState is smaller than
MpegTSContext thus innocent memory gets overwritten).
Signed-off-by: Alexander V. Lukyanov <lavv17f@gmail.com>
Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '18fb38fb':
  mov: Remove a variable that is set but never used

Conflicts:
	libavformat/mov.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'cf280ed0':
  avplay: Handle pixel aspect ratio properly

See: 32fdfdfb
See: 99b01e45
See: 825ec16dMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '52a1c32c':
  nut: Use nut->version in the version range check

Conflicts:
	libavformat/nutdec.c

Note, this bug did not affect ffmpeg
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

Disable moved functions to prevent build/test failure,
patch to update and re-enable them is welcome
volunteer to maintain the alpha code is welcome too
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This silences a warning with gcc.
Signed-off-by: Martin Storsjö <martin@martin.st>

This was broken (left half-implemented) in 354468fc.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

It was wrongly left unchanged when the version field had been
introduced. (c94e2e85)

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

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

The threshold was choosen so that no further size decrease happened with larger lambda
with the test video.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Resolutions are stored as 16bit integers
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '79fce1ec':
  arm: Avoid using the 'setend' instruction on ARMv7 and newer

Conflicts:
	libavcodec/arm/h264dsp_init_arm.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3d90f27a':
  avformat_new_stream: make the AVCodec parameter const

Conflicts:
	libavformat/utils.c

See: e12cfd04Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd3cfd7af':
  af_compand: make sure request_frame always outputs at least one frame

See: 6b68e2a4Merged-by: Michael Niedermayer <michaelni@gmx.at>

This instruction is deprecated on ARMv8, and it is serializing on
some ARMv7 cores as well [1].

[1] http://article.gmane.org/gmane.linux.ports.arm.kernel/339293

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

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

This fixes a segmentation fault because request_frame in fifo.c assumes
that the call to ff_request_frame will populate fifo->root.next.
Before, it was possible for request_frame in af_compand to not do this,
resulting in a null pointer access. Now, request_frame in af_compand
always will return at least one frame or an error, as per the API
specifications in avfilter.h for request_frame.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

* commit 'a9aee08d':
  dsputil: Split off FDCT bits into their own context

Conflicts:
	configure
	libavcodec/Makefile
	libavcodec/asvenc.c
	libavcodec/dnxhdenc.c
	libavcodec/dsputil.c
	libavcodec/mpegvideo.h
	libavcodec/mpegvideo_enc.c
	libavcodec/x86/Makefile
	libavcodec/x86/dsputilenc_mmx.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>