Fixes Ticket4393
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The encoders can't share a class instance.
Signed-off-by: Philip Langdale <philipl@overt.org>

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

If the user attempts to use AviSynth 2.5, an error message will
now tell them they need to upgrade.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: da14e86d8462be6493eab16bc2d40f88/asan_heap-oob_204cfd2_528_cov_340150052_COMPRESS.BMP

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The demuxer doesn't use these functions, so it shouldn't affect
anything.  Investigate whether this can be fixed by how headers
are checked in configure.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Preparation for following patch.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: James Almer <jamrial@gmail.com>

Should fix compilation of builds without nvenc
Signed-off-by: James Almer <jamrial@gmail.com>

Sufficiently new nvenc hardware (GM20x or later) has support for H.265
encoding. This works the same as the H.264 encoder except the
codec parameters are different.

Due to the fact that common codec parameters are not shareable, there's
quite a bit of conditional logic you'd wish we could do without, but
such is life.
Signed-off-by: Philip Langdale <philipl@overt.org>
Reviewed-by: Timo Rothenpieler <timo@rothenpieler.org>

Fixes assertion failure

Fixes: f12c79769501ee471a5c731b8304ffcb/signal_sigabrt_7ffff6ac8cc9_3766_cov_4267830138_undemuxable_h264.ts

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fixes: AVCI100_Test.mxf
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>

avcodec/msrledec: restructure msrle_decode_pal4() based on the line number instead of the pixel pointer

Fixes out of array access
Fixes: da14e86d8462be6493eab16bc2d40f88/asan_heap-oob_204cfd2_528_cov_340150052_COMPRESS.BMP

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #4387.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Note, Vittorio Giovara had submitted a very similar fix to me privately
a few hours before this, iam applying Jochens because it comes with a
commit message too and i had not yet applied Vittorios, but For sake
of credit, Vittorio independently solved this first

* cehoyos/master:
  lavf/matroskaenc: List subtitle codecs with fake codec_tags to allow remuxing.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '11881196':
  avisynth: update documentation about the avisynth_c.h header

Conflicts:
	doc/general.texi

Not merged as FFmpeg provides the needed headers in compat/
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a8c99205':
  avisynth: Fix compilation against current 2.6 header(s).
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

AviSynth 2.6 (and by extension, AviSynth+) moves these functions
into AVSC_API. This requires both adjusting their normal use,
and for AvxSynth, adjusting the position/use of the USING_AVISYNTH
ifdefs.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fixes remuxing of DVBSUB to mkv.

Reported-by: Bostjan Hamler

* commit '1ddd3e23':
  vaapi_h264: fix slice data offset

See: aba3030aMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ae4f5d94':
  dxva2_h264: fix slice offset in long slice structs

See: cf1fba0fMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b21af32a':
  lavc: Prefer x264 over openh264 if both libraries are available

See: ddae03f6Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '312a9ef0':
  pixfmt: Update documentation with prefixed pixel formats

Conflicts:
	libavutil/pixfmt.h

See: 231e33f0Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '592a0405':
  pixdesc: Replace a few leftover instances of non AV-prefixed flags

Conflicts:
	libavutil/pixdesc.c

See: c7c71f95Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7419b348':
  fate: Add test for tscc2 in mov
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e4fe535d':
  mov: Write the display matrix in order

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

Reviewed-by: Tomas Härdin <tomas.hardin@codemill.se>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>