This avoids invalid free when the stream id doesn't match the packet
stream index.

Ticket #2501

* cigaes/master:
  lavc: check decoded subtitles encoding.
  lavu: fix GET_UTF8 macro.
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>

The existing implementation had little to do with VC1.
This could be implemented by adjusting the reference frames
ithemselfs but that would make frame multi-threading difficult.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Both don't change anything in the context between frames.

Address trac ticket #2431.

Prevent 0xFE and 0xFF from being considered the start of
non-standard 7-bytes sequences. No noticeable effect on speed.

Fix checkheaders when vid.stab is not available.

The frame must be writable if the show option is set, otherwise pass the
frame unchanged.

vidstabdetect and vidstabtransform common functions for interfacing
vid.stab are in libavfilter/vidstabutils.c
Signed-off-by: Georg Martius <martius@mis.mpg.de>

Make clear that the options accept an expression.

Honour declaration order in filter implementation, for shorthand
consistency.

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

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

No sample tried shows a difference
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Avoid a (confusing) memcpy()
Simpler code
Fixes a small number of artifacts in black_screen_VC-1.mkv
and several more artifacts in other videos
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* qatar/master:
  x86: Get rid of duplication between *_rnd_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'feec9349':
  mpegvideo: unref cur/next/prev frames when flushing
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6a8561db':
  x86: Factorize duplicated inline assembly snippets
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '2e2d2466':
  jpeg2000: Add mutlti-threading support to decoder
Merged-by: Michael Niedermayer <michaelni@gmx.at>

    This should fix building with MSVC until someone can change the
    code so it works with MSVC
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also favor the video filter name for indexing, in case there is an a*
audio filter variant.

In particular, fix h/H commands in case h and H are not specified as
initial parameters.

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

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

* cehoyos/master:
  Read block_align from extradata when decoding qclp in aiff.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #1287.