Use the h264 parser when decoding VSSH in avi.

Fixes ticket #3261 visually.

Analyzed-by: Michael Doilnitsyn

doc/filters/equalizer: add examples for equalizer

Add two examples on the usage of the equalizer filter.

tools/qt-faststart: add -movflags +faststart note

avformat/takdec: zero padding area before use

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7fcecee73d71_6470_luckynight-partial.tak
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/adxdec: dont return random data on EOF

Fixes use of uninitialized memory
Partly fixes; msan_uninit-mem_7fb7d24780d0_2744_R03T.CAK
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/segafilm: drop song and dance, this seems not to do anything anymore since a long time

Fixes use of uninitialized memory
Partly fixes; msan_uninit-mem_7fb7d24780d0_2744_R03T.CAK
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/flacdec: check rice_order against blocksize

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f6e13c220d0_8489_short.flac
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  network.h: Add #endif comments to improve readability

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

rename CONFIG_FFT_FIXED_32 -> FFT_FIXED_32

This matches FFT_FLOAT

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

Merge commit '794fcf79a89eca2d4e889803b2c804a0b1defbb3'

* commit '794fcf79a89eca2d4e889803b2c804a0b1defbb3':
  Rename CONFIG_FFT_FLOAT ---> FFT_FLOAT

Conflicts:
libavcodec/fft-internal.h
libavcodec/fft-test.c
libavcodec/fft_fixed.c
libavcodec/fft_float.c
libavcodec/fft_template.c
libavcodec/mdct_fixed.c
libavcodec/mdct_float.c

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

examples/decoding_encoding: fix style nits

avformat/webvttdec: Dont skip over a never checked byte after -->

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f49667d83db_3396_WebVTT_capability_tester.vtt
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/mpeg4videodec: use av_fast_padded_malloc() for bitstream buffer

Fixes use of uninitialized memory with vlc (sample from ticket3277)

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

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  libopusenc: Change default frame duration to 20 ms

See: 74906d3727ec3bd9b7b28dfa7a98ff6e8cf8b6d7
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avformat/rmdec: check that sub_packet_size fit in the packet for DEINT_ID_GENR

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7fa8c49400d0_3923_audiosig.rm
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/nutdec: check avio_read() return code

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f2785ab8669_6838_mewmew_vorbis_ssa.nut
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '9409c9bdbfd829353473ee6cc3e91c726481c069'

* commit '9409c9bdbfd829353473ee6cc3e91c726481c069':
  configure: Disable networking if winsock2.h is available but winsock functions aren't

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

Merge commit '01d245ef4392152dbdc78a6ba4dfa0a6e8b08e6f'

* commit '01d245ef4392152dbdc78a6ba4dfa0a6e8b08e6f':
  random_seed: Rewrite the generic clock() based seed code

Conflicts:
libavutil/random_seed.c

See: 66531c75d3bfd8a013acd8bd3c04a131dae2a1a0
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/huffyuv: add YUVA420P, YUVA422P, YUVA444P, GBRAP, GRAY8A

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

network.h: Add #endif comments to improve readability

avcodec/huffyuv: add GRAY8 support

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

avcodec/huffyuv: add GBRP support

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

Rename CONFIG_FFT_FLOAT ---> FFT_FLOAT

The define does not originate from configure, so it should not
have a name that is CONFIG_-prefixed.

libopusenc: Change default frame duration to 20 ms

20 ms is the default in the libopus encoder, and gives better
quality than 10 ms.

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

configure: Disable networking if winsock2.h is available but winsock functions aren't

Previously, if neither of the checks for the closesocket function
succeeded, we still kept winsock2.h and networking in general
enabled.

When targeting the WinRT API subset, the winsock2.h header is
available (making the check for it succeed, giving the impression
that winsock is available), but tests that actually try to use
such a function will fail. In this case, disable the winsock2.h
feature and networking in general, as if the winsock2.h header
test would have failed in the first place.

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

random_seed: Rewrite the generic clock() based seed code

The new code is faster and reuses the previous state in case of
multiple calls.

The previous code could easily end up in near-infinite loops,
if the difference between two clock() calls never was larger than
1.

This makes fate-parseutils finish in finite time when run in wine,
if CryptGenRandom isn't available (which e.g. isn't available if
targeting Windows RT/metro).

Patch originally by Michael Niedermayer but with some modifications
by Martin Storsjö.

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

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  configure: Update freetype check to follow upstream

Conflicts:
configure

Not merged, as its broken (Reported by ubitux)

See: cea5812fa723c08b89d929eeba73462e05de2973
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit 'd68dc3c9446e38b4d686cc0f55433c9e8d7c128b'

* commit 'd68dc3c9446e38b4d686cc0f55433c9e8d7c128b':
  drawtext: Drop pointless header

See: cea5812fa723c08b89d929eeba73462e05de2973
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '6892d145a0c80249bd61ee7dd31ec851c5076bcd'

* commit '6892d145a0c80249bd61ee7dd31ec851c5076bcd':
  segafilm: fix leaks if reading the header fails

Conflicts:
libavformat/segafilm.c

See: ca5456db7fa62a81d8effa20fb7547c16dd1d796
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '9cbf2d78f0a9c19129e7a70b2281a450d386c6d9'

* commit '9cbf2d78f0a9c19129e7a70b2281a450d386c6d9':
  pthread_frame: unref decoded frames on failure

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

Merge commit 'a03a642d5ceb5f2f7c6ebbf56ff365dfbcdb65eb'

* commit 'a03a642d5ceb5f2f7c6ebbf56ff365dfbcdb65eb':
  h264: do not use 422 functions for monochrome

See: 07abf13da4a7c3d23ce6bc6542d72e6252161736
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '9eef9eb3014b2ed9c3ff4aac510a9f04edb555cf'

* commit '9eef9eb3014b2ed9c3ff4aac510a9f04edb555cf':
  h264: check that execute_decode_slices() is not called too many times

Conflicts:
libavcodec/h264.c

The check is replaced by an assert() as the mb index should not ever go out
of bounds.

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

Merge commit 'bfd26b7ce6efea594f2b99441d900419df3af638'

* commit 'bfd26b7ce6efea594f2b99441d900419df3af638':
  h264: reject mismatching luma/chroma bit depths during sps parsing

Conflicts:
libavcodec/h264_ps.c

See: bdeb61ccc67911cfc5e20c7cfb1312d0501ca90a
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/h264: reset list_count too in case of error in ff_set_ref_count()

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

Merge commit '9a026c72982faf20e1c8dfbe48f0b312cdea69c8'

* commit '9a026c72982faf20e1c8dfbe48f0b312cdea69c8':
  h264: rebuild the default ref list if the reference count changes

Conflicts:
libavcodec/h264.c

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

Merge commit '4736d003fac30af4afd8390182f12f480ad78801'

* commit '4736d003fac30af4afd8390182f12f480ad78801':
  cavsdec: check ff_get_buffer() return value

Conflicts:
libavcodec/cavsdec.c

See: eee8c94f50bfcd93c1f761b4e6b55bec3815616d
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '50079a6aa93291e6dc9d9fb8d33da83f79e9311d'

* commit '50079a6aa93291e6dc9d9fb8d33da83f79e9311d':
  lavc: do not leak the internal frame if opening the codec fails

Conflicts:
libavcodec/utils.c

See: 8b285f03f70e884312c6c4e00a1377cfd85a3a7a
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '3867f3718ba82ff11d3e24c6d84beb520d0b174f'

* commit '3867f3718ba82ff11d3e24c6d84beb520d0b174f':
  lavf: remove a pointless check

Conflicts:
libavformat/utils.c

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

Merge commit '75647dea6f7db79b409bad66a119f5c73da730f3'

* commit '75647dea6f7db79b409bad66a119f5c73da730f3':
  oggparseogm: check timing variables

See: 9ed388f5985992a0a6a43fdc0b1732962b6b5619
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '8058284ce09030b47512746d726fb2ad3ae8a20f'

* commit '8058284ce09030b47512746d726fb2ad3ae8a20f':
  lavc: add 422/444 YUV with alpha to align_dimensions()

Conflicts:
libavcodec/utils.c

Only cosmetical changes happen as these formats already where in the list before

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

Merge commit '2f97094608cfd2665660f7a26a3291559b186752'

* commit '2f97094608cfd2665660f7a26a3291559b186752':
  lagarith: do not call simd functions on unaligned lines

Conflicts:
libavcodec/lagarith.c

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

Merge commit 'f4a8a0080537484154bb74e08ec76cbcbd25484b'

* commit 'f4a8a0080537484154bb74e08ec76cbcbd25484b':
  sgidec: fix buffer size check in expand_rle_row()

Conflicts:
libavcodec/sgidec.c

See: 39c56ef9216c508a2c19cef93600e6590b4595cd
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit 'adb199d1bc7f86aa6b85986f40190ec17f99d34f'

* commit 'adb199d1bc7f86aa6b85986f40190ec17f99d34f':
  kgv1dec: replace forcing EMU_EDGE by a copy

Conflicts:
libavcodec/kgv1dec.c

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

Merge commit 'fe80fa53bc4977ef6e8e749a9df8ca5590a09307'

* commit 'fe80fa53bc4977ef6e8e749a9df8ca5590a09307':
  4xm: replace forcing EMU_EDGE by a copy

Conflicts:
libavcodec/4xm.c

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

Merge commit 'fffca3d278c2a2422c2f61f21c5a9d5f690d328e'

* commit 'fffca3d278c2a2422c2f61f21c5a9d5f690d328e':
  4xm: return a proper error code.

Conflicts:
libavcodec/4xm.c

See: a5e382ad7ffd8be810f3a614c4c447a1cd1936f2
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '060667195e6e6bc0fa63ce13c47e23aabe70d122'

* commit '060667195e6e6bc0fa63ce13c47e23aabe70d122':
  hevc: rename some HEVC conformance streams

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

Merge commit '98c0cd0b99254cd12f312bf6a4c24cd3ec5886b5'

* commit '98c0cd0b99254cd12f312bf6a4c24cd3ec5886b5':
  hevc: add new conformance streams

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

configure: Update freetype check to follow upstream

The freetype tutorial suggests to use #include FT_FREETYPE_H.

Bug-Id: 616

drawtext: Drop pointless header

It should be forward compatible with newer freetype.

segafilm: fix leaks if reading the header fails

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

pthread_frame: unref decoded frames on failure

This is similar to what the non-threaded code already does.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

h264: do not use 422 functions for monochrome

Fixes invalid memory access.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

h264: check that execute_decode_slices() is not called too many times

Fixes invalid reads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

h264: reject mismatching luma/chroma bit depths during sps parsing

There is no point in delaying the check and it avoids bugs with a
half-initialized context.

Fixes invalid reads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

h264: rebuild the default ref list if the reference count changes

Fixes possible access to freed memory.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

cavsdec: check ff_get_buffer() return value

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

lavc: do not leak the internal frame if opening the codec fails

lavf: remove a pointless check

AVStream.codec is always non-NULL

oggparseogm: check timing variables

Fixes a potential divide by zero.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org

lavc: add 422/444 YUV with alpha to align_dimensions()

Aligns frame dimensions to 16, which fixes potential invalid writes.

lagarith: do not call simd functions on unaligned lines

They end up overwriting past the line end.

Partially based on a patch by Michael Niedermayer <michaelni@gmx.at>

Bug-Id: vlc/9700
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

sgidec: fix buffer size check in expand_rle_row()

Right now it will spuriously fail if the linesize is exactly equal to
the data width.

CC:libav-stable@libav.org

kgv1dec: replace forcing EMU_EDGE by a copy

The decoder currently sets CODEC_FLAG_EMU_EDGE and relies on
get_buffer2() to always provide buffers with linesize == 2 * width.
This is wrong, since we place no such restriction on get_buffer2()
implementations.

Fix this by decoding into internal buffers and copying them to output
frames. Since this is a very obscure decoder, the performance hit should
not be an issue.

4xm: replace forcing EMU_EDGE by a copy

The decoder currently sets CODEC_FLAG_EMU_EDGE and relies on
get_buffer2() to always provide buffers with linesize == 2 * width.
This is wrong, since we place no such restriction on get_buffer2()
implementations.

Fix this by decoding into internal buffers and copying them to output
frames. Since this is a very obscure decoder, the performance hit should
not be an issue.

4xm: return a proper error code.

hevc: rename some HEVC conformance streams

Some HEVC conformance streams zip on
http://wftp3.itu.int/av-arch/jctvc-site/bitstream_exchange/draft_conformance/
were updated without changing the actual stream. Rename them in FATE
accordingly to make it easier to track future stream updates.

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

hevc: add new conformance streams

Also remove superseded conformance streams. The conformance streams all
come from http://wftp3.itu.int/av-arch/jctvc-site/bitstream_exchange/draft_conformance/

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

avcodec/hevc: Fix modulo operations

Fixes qp fields becoming out of range
Fixes: asan_static-oob_e393a3_6998_WPP_A_ericsson_MAIN10_2.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/hevc_ps: check that VPS referenced from SPS exists

This matches how its done for SPS/PPS.
An alternative to this is to check it when its used.

Fixes null pointer dereference
Fixes: signal_sigsegv_e30a43_1437_CIP_A_Panasonic_3.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/huffyuvdec: optimize decode_plane_bitstream(), use joint tables for new yuv formats

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

fate: test version 3 of ffvhuff

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

avcodec/huffyuv: Support more 8bit YUV formats

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  cmdutils: update copyright year to 2014.

Conflicts:
cmdutils.c

See: 0b1cfc4f28d81a8a49fdd5589b2eed06477abd61
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '7840c40445c9f52aeccba96de3d27613398bfbf2'

* commit '7840c40445c9f52aeccba96de3d27613398bfbf2':
  (e)ac3dec: set AV_FRAME_DATA_MATRIXENCODING side data.

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

Merge commit '13345fc1f86fc3615789e196d5a339c1c27c9068'

* commit '13345fc1f86fc3615789e196d5a339c1c27c9068':
  (e)ac3: parse and store the Dolby Surround, Surround EX and Headphone mode flags.

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

Merge commit 'e92123093dfdca0ef6608998240e2f9345d63bff'

* commit 'e92123093dfdca0ef6608998240e2f9345d63bff':
  mlpdec: set AV_FRAME_DATA_MATRIXENCODING side data.

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

Merge commit '4b7f1a7ced0e98f2cc698d896f7ebab8d30eaa09'

* commit '4b7f1a7ced0e98f2cc698d896f7ebab8d30eaa09':
  mlp: Parse TrueHD decoder channel modifiers and set the AVMatrixEncoding for each substream.

Conflicts:
libavcodec/mlp_parser.h
libavcodec/mlpdec.c

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

Merge commit '30d70e79a6b4ac7f4eb66446a9da275161ef6ea7'

* commit '30d70e79a6b4ac7f4eb66446a9da275161ef6ea7':
  dcadec: set AV_FRAME_DATA_MATRIXENCODING side data.

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

Merge commit '6bfdb2de881372048be7fbda643417e1fd3ce93c'

* commit '6bfdb2de881372048be7fbda643417e1fd3ce93c':
  dcadec: set the output channel mode more accurately.

Conflicts:
libavcodec/dcadec.c

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

Merge commit '5b4797a21db900b7d509660b7a4d49829089b004'

* commit '5b4797a21db900b7d509660b7a4d49829089b004':
  avframe: add AV_FRAME_DATA_MATRIXENCODING side data type.

Conflicts:
libavutil/version.h

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

Merge commit '5c437fb'

* commit '5c437fb':
  lavu: Add values for various Dolby flags to the AVMatrixEncoding enum.

Conflicts:
doc/APIchanges
libavutil/version.h

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

vp9_parse: don't use AVCodecParserContext as av_log context.

Fixes trac ticket 3273.

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

cmdutils: update copyright year to 2014.

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

avfilter/vf_format: check that the format list is not empty

Fixes Ticket3210

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

pulse: get latency only when needed

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

pulse: set time_base as multiple of sample_rate

The stream time_base has been changed to be a multiple of the
device sample_rate. Now the frame_duration computation is simpler
and a message will warn about problematic frame_size values.

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/nutdec: remove unused variable

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

(e)ac3dec: set AV_FRAME_DATA_MATRIXENCODING side data.

(e)ac3: parse and store the Dolby Surround, Surround EX and Headphone mode flags.

mlpdec: set AV_FRAME_DATA_MATRIXENCODING side data.

mlp: Parse TrueHD decoder channel modifiers and set the AVMatrixEncoding for each substream.

dcadec: set AV_FRAME_DATA_MATRIXENCODING side data.

dcadec: set the output channel mode more accurately.

When downmixing 2.1 to 2-channel, if the 2.0 portion is Lt/Rt, sum-difference or dual mono, the actual output will be the same (with the LFE either mixed-in or discarded).

Also, when downmixing an arbitrary layout to 2-channel, if the bitstream contains custom downmix coefficients targeting Lt/Rt, then the output will be Lt/Rt rather than regular Stereo.

avframe: add AV_FRAME_DATA_MATRIXENCODING side data type.

Includes a libavcodec utility function to update a frame's side data.

lavu: Add values for various Dolby flags to the AVMatrixEncoding enum.

v4l2: setting device parameters early

Setting the v4l2 device parameters may influence video properties
such as width, height and pixel format.
This patch moves v4l2_set_parameters to be executed before fetching
the video properties, avoiding errors such as (pal vs ntsc):

 The v4l2 frame is 829440 bytes, but 691200 bytes are expected

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  configure: Support preprocessor macros as header names

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

configure: Support preprocessor macros as header names

New versions of FreeType have moved the location of their API
header(s) and hide the location behind a macro.

Since the location changes between versions and no other way
to know the location exists, this workaround becomes necessary.

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

avformat/matroskaenc: warn when muxing video codec not supported by format

This occurs for video codecs that have codec_tag set, but are are not listed
in ff_codec_bmp_tags (e.g. AV_CODEC_ID_BINKAUDIO, AV_CODEC_ID_IFF_ILBM).

Fixes ticket #3269.

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  sdp: Check that fmt->oformat is non-null before accessing it

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