avformat/matroskadec: export Content Light Level metadata

Based on a patch by Hendrik Leppkes

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

Merge commit 'c2fa6bb0e8703a7a6aa10e11f9ab36094416d83f'

* commit 'c2fa6bb0e8703a7a6aa10e11f9ab36094416d83f':
  mpeg12dec: move setting first_field to mpeg_field_start()

This commit is a noop, see 2f6f2f4f73c068979829e785d08cb1dd345c7fc8

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

tools: Eliminate codec_type complexity from fuzzer

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

libswscale/tests/swscale: Fix uninitialized variables

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

avfilter/af_crystalizer: add support for more sample formats

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec/pthread_frame, decode: allow errors to happen on draining

So, all frames and errors are correctly reported in order.
Also limit the numbers of error during draining to prevent infinite loop.

This fix fate failure with THREADS>=4:
  make fate-h264-attachment-631 THREADS=4
This also reverts a755b725ec1d657609c8bd726ce37e7cf193d03f.

Suggested-by: wm4, Ronald S. Bultje, Marton Balint
Reviewed-by: w4 <nfxjfg@googlemail.com>
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

avfilter: add video oscilloscope filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter: add pixscope filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Merge commit 'e807491fc6a336e4becc0cbc981274a8fde18aba'

* commit 'e807491fc6a336e4becc0cbc981274a8fde18aba':
  mpeg12dec: avoid signed overflow in bitrate calculation
  mpegvideo_parser: avoid signed overflow in bitrate calculation

This merge is a noop.

2017-04-29 12:54:15     @ubitux michaelni: is 740959fdbfbf804ccd8a6e426b1b1ba321fe5cfb enough to fix the overflow fixed in 58405de0951a843765625159402870c1eea3c3b1?
2017-04-29 12:55:53     @ubitux same question with e807491fc6a336e4becc0cbc981274a8fde18aba
2017-04-29 13:21:45     michaelni       ubitux, the libav code refered to is wrong for us and i doubt the problem it fixes applies to us.
2017-04-29 13:24:29     @ubitux michaelni: ok, for both commits?
2017-04-29 13:33:55     michaelni       yes, they do more or less the same thing

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '46191a2da16f751e53d93646ae1388d421d12bee'

* commit '46191a2da16f751e53d93646ae1388d421d12bee':
  mov: fix a possible invalid read in mov_read_mac_string()

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'cfa4eb4fba782f3f37a33be997b27a91a07053c9'

* commit 'cfa4eb4fba782f3f37a33be997b27a91a07053c9':
  vaapi_decode: use the correct logging context

This commit is a noop, see 79307ae56374b35cf12563a7c8e3e759658f847e

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'ea8b730d8e67152107d7fcdd5590bbb51ec236b1'

* commit 'ea8b730d8e67152107d7fcdd5590bbb51ec236b1':
  hevcdec: add a VAAPI hwaccel

This commit is a noop, see adb54e59c18db347f39e55832104fc3e40a3c42b

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '1783d7ec03d730c5bd96c07bc5fa7aa566f85c66'

* commit '1783d7ec03d730c5bd96c07bc5fa7aa566f85c66':
  Changelog: add some missing entries

Merged-by: Clément Bœsch <u@pkh.me>

doc/filters: add one lowpass filter example

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avformat/movenc: Explicitly address potential division by zero.

find_fps attempts to infer framerate from AVCodec's timebase. When this
results in a frame rate that isn't explicitly marked as supported in
av_timecode_check_frame_rate, find_fps returns the AVStream's
avg_frame_rate, which, per avformat.h, _may_ be set (or not).

mov_get_mpeg2_xdcam_codec_tag, mov_get_h264_codec_tag and
find_compressor attempt to call av_q2d on the return value of find_fps,
which in the above case, may result in division by zero and therefore,
an undefined frame rate when NaN is converted to int.

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

libvpxenc: allow aq-mode 4 (equator360)

this was added in 1.6.0

Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: James Zern <jzern@google.com>

avfilter/lavfutils: use image2pipe demuxer on ff_load_image

allow protocols other than file to be used
for example, use data protocol to embed a file in script

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

avformat/hlsenc: fix CID 1405135

Fixes Coverity CID: 1405135

Reviewed-by: Rodger Combs <rodger.combs@gmail.com>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

avformat/hlsenc: hold old key info when append list

fix ticket id: #6353

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

opus_pvq: use function pointers for recursion

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

avcodec/opus_pvq: fix recursive inlining compilation failures

They were introduced by f16180f44859587e0211170bd82b1bfd26f24b5a

avcodec/mdec: Fix runtime error: left shift of negative value -127

Fixes undefined behavior
Fixes: 1275/clusterfuzz-testcase-minimized-6718162017976320

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

tools/target_dec_fuzzer: Fix return code on open failure

Fixes: 1271/clusterfuzz-testcase-minimized-6095220498235392

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/x86/vc1dsp_init: Fix build failure with --disable-optimizations and clang

compilers doing DCE at -O0 do not necessarily understand "complex" boolean expressions
Build succeeds with this change, this was the only failure

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

libavcodec/exr : fix float to uint16 conversion for negative float value

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

opus_pvq: merge band encoding and decoding into one function

Most code between the 2 functions was duplicated which made keeping
both in sync difficult.

This also fixes some discovered issues with encoding (incorrect
TF switching buffers) and reduces stack usage (reuse the already
allocated CeltFrame->scratch buffer for the quantized coefficients).

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

opus_pvq: remove outdated/incorrect comments and redundant variables

Removes the last style issues with opus_pvq.c

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

opus_pvq: minor cleanups

Removes unneeded variables, renames confusing and innacurate variables
and rewrites and slightly optimizes hadamard interleave/deinterleave
functions.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

avcodec/nvenc: surface allocation reduction

This patch aims to reduce the number of input/output surfaces
NVENC allocates per session. Previous default sets allocated surfaces to 32
(unless there is user specified param or lookahead involved). Having large
number of surfaces consumes extra video memory (esp for higher resolution
encoding). The patch changes the surfaces calculation for default, B-frames,
lookahead scenario respectively.

The other change involves surface selection. Previously, if a session
allocates x surfaces, only x-1 surfaces are used (due to combination
of output delay and lock toggle logic). To prevent unused surfaces,
changing surface rotation to using predefined fifo.

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

lavc/hevcdec: fix invalid use of ff_get_format()

Regression since 76cc100afba25308eaa909acd8804cc0b42057f6.

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

Merge commit 'd4a91e65343be5d79a4afa61c791191e1b57499a'

* commit 'd4a91e65343be5d79a4afa61c791191e1b57499a':
  pthread_frame: do not run hwaccel decoding asynchronously unless it's safe

This commit is a noop, see e0cd598bc4684654d63942e9ff4872c0b48a7dc2

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '8dfba25ce89b62c80ba83e2116d549176c376144'

* commit '8dfba25ce89b62c80ba83e2116d549176c376144':
  pthread_frame: ensure the threads don't run simultaneously with hwaccel

This commit is a noop, see 14bb15bfd56d6e907fabe4620206c1ee152b7a20

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '373fd76b4dbd9aa03ed28e502f33f2ca8c1ce19a'

* commit '373fd76b4dbd9aa03ed28e502f33f2ca8c1ce19a':
  hevcdec: do not set decoder-global SPS prematurely

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '0fea8555ae25124c21f4c4f55a5fa76e9169aa03'

* commit '0fea8555ae25124c21f4c4f55a5fa76e9169aa03':
  v4l2: use codec descriptors for mapping a codec name to id

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'ee480790c7eeb03c9cebd8971c46e0cb7db65277'

* commit 'ee480790c7eeb03c9cebd8971c46e0cb7db65277':
  build: Add name parameter to check_lib() helper function

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '1faffe7e8fab21186a233011bc8a62f47962e2cd'

* commit '1faffe7e8fab21186a233011bc8a62f47962e2cd':
  configure: Disentangle vfw32 and user32 lib handling

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'f7174d7ed045445d00a6d557236737d09ad32343'

* commit 'f7174d7ed045445d00a6d557236737d09ad32343':
  configure: fix linking with MSVC when using --disable-optimizations

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'ef9a711be718ed3802a263d1d9ed340a4aaef224'

* commit 'ef9a711be718ed3802a263d1d9ed340a4aaef224':
  configure: put d3d11 check in alphabetical order

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'a4fec9a7eab842ea5eea1b1ee98624356cb31422'

* commit 'a4fec9a7eab842ea5eea1b1ee98624356cb31422':
  rtmppkt: Check for packet size mismatches

See 7d57ca4d9a75562fa32e40766211de150f8b3ee7

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'cdcfa97dc49d83b5eefd0a651db6bb0a6f98e8f2'

* commit 'cdcfa97dc49d83b5eefd0a651db6bb0a6f98e8f2':
  libavformat: Fix a faulty api deprecation guard in prepare_input_packet

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '2425d7329fdccfa9954faba748f3865151354f0c'

* commit '2425d7329fdccfa9954faba748f3865151354f0c':
  arm64: replace 'bic' with immediate with 'and' with inverted immediate

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '05a603a94e4b3eeefa5e18ae653a848001461e89'

* commit '05a603a94e4b3eeefa5e18ae653a848001461e89':
  ppc: Merge types_altivec.h into util_altivec.h

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'ea7ee4b4e381e0fa731458de0cbf740430eeb013'

* commit 'ea7ee4b4e381e0fa731458de0cbf740430eeb013':
  ppc: Centralize compiler-specific altivec.h #include handling in one place

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '39929e55eb13eeb8dfbe1bc99301fecf6b8942dd'

* commit '39929e55eb13eeb8dfbe1bc99301fecf6b8942dd':
  ppc: hevcdsp: Use shorthands for vector types

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '554e55bbf0e4a3640a784cb512b816e776c56333'

* commit '554e55bbf0e4a3640a784cb512b816e776c56333':
  decode.h: Add missing headers to fix standalone compilation

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '343e2833994655c252d5236a3394bf6db7a4d8b1'

* commit '343e2833994655c252d5236a3394bf6db7a4d8b1':
  pthread_frame: use better memory orders for frame progress

This commit is a noop, see c358c62550e60a150c49f192d72631142a6eedd6

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'e94b9313b21c3d91a36ef064f7fe3e867616f47f'

* commit 'e94b9313b21c3d91a36ef064f7fe3e867616f47f':
  fate: Add h264 test for frame num gaps

This commit is a noop, see b7e4ea0c80f4b3e060625fd97ffdd3b9689bfcd1

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '5c7f2cf81df06614f255f061850132355a01d75e'

* commit '5c7f2cf81df06614f255f061850132355a01d75e':
  h264_slice: Wait for refs to be available before we use them in error concealment

This commit is a noop, see 4413e950b26396bfb797168e4f81164a022cc6f3

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit '86157e6db2c7a9222f77fa7e7f50fb9aebc3aa81'

* commit '86157e6db2c7a9222f77fa7e7f50fb9aebc3aa81':
  hevc: decouple calling get_format() from exporting the SPS parameters

See 786032cad8ecabe577d9cff0356da6e9e9488a2d (which has been reverted
and replaced with Anton's version to reduce diffs between the two
projects).

Merged-by: Clément Bœsch <u@pkh.me>

avformat/concatdec: fix the h264 annexb extradata check

The start code can be either in the first three or four bytes.

Merge commit '730c02326094bcfb1fa67f10a7e7b22f03f5a88f'

* commit '730c02326094bcfb1fa67f10a7e7b22f03f5a88f':
  binkaudio: switch to the new send/receive API

Merged-by: Clément Bœsch <u@pkh.me>

Merge commit 'fa1749dd34c55fb997c97dfc4da9383c9976ab91'

* commit 'fa1749dd34c55fb997c97dfc4da9383c9976ab91':
  vp9: split superframes in the filtering stage before actual decoding

This commit is a noop.

2017-04-24 20:45:04     @ubitux BBB: btw, do you think you can get the bsf thing this week or we should skip it to give you more time and go on with the merges?
2017-04-24 20:45:20     @BBB    I’m not sure I’ll finish it that soon
2017-04-24 20:45:26     @BBB    I’d skip it and leave it for later
2017-04-24 20:45:35     @BBB    I’ll do it, I promise, but I Can’t guarantee it’ll be done by $date

Merged-by: Clément Bœsch <u@pkh.me>

avfilter/af_biquads: allow filtering only selected channels

Signed-off-by: Paul B Mahol <onemda@gmail.com>

fate/exr : fix pix_fmt

rgb_scanline_pxr24_half_uint32_13x9.exr doesn't have alpha

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

tools/target_dec_fuzzer: Remove FuzzerInterface.h dependancy

The header is not always available in the docker build environment

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

fate: Add test for pkt_size of ffprobe

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

Make tools/target_dec_*_fuzzer buildable with configure and make

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

tools/target_dec_fuzzer: Fix build with default FFmpeg build flags

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

avfilter: add lumakey filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec/crystalhd: Another attempt at using mpeg4_unpack_bframes bsf

I tried doing this before, but it resulted in weird behaviour with
certain samples. I want to say I think I've got it sorted out now,
and the new autobsf stuff makes it trivial to turn on.

The native support for packed bframes is buggy and I think buggy
in ways beyond what I already try to account for, so this should be
a net improvements.

avcodec/crystalhd: Explicitly set frame pts at all times

Previously, the pts value was initialised to AV_NOPTS_VALUE and so
it was not necessary to always set it. Now, with the new-new decode
API, this is no longer true. I'm not sure why I avoided setting the
pts when the decoder value was also AV_NOPTS_VALUE - it clearly
wouldn't have changed anything previously, but here we are.

Failing to do this, means the frame pts will be some random uninitalised
value.

decode: Initialize ret before using it

libavcodec/decode.c:608:9: warning: variable 'ret' is
      used uninitialized whenever 'if' condition is false

(cherry picked from libav commit efddf2c09aed7400c73ecf327f86a4d0452b94b5)

avcodec/movtextenc: Ignore unmatched closing style tags

The existing code will segfault if a closing tag shows up when there
was never an opening tag. This isn't a well formed style, but it's also
not a reason to crash.

Fixes: https://trac.ffmpeg.org/ticket/6303

webm_dash_manifest_demuxer: Fix initialization range for files with cues at the front

The WebM DASH spec states:
    The Initialization Segment shall not contain Clusters or Cues.
    The Segment Index corresponds to the Cues.

Previously, it included the cues if they were at the front.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

webm_dash_manifest_demuxer: Fix UB in cue timestamp string code and make it actually work

Output was apparently not tested for correctness. Passing overlapping
memory to snprintf causes undefined behavior, and usually resulted in
only the very last timestamp being written to metadata, and not a list
at all.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

avcodec/crystalhd: Switch to the new generic filtering mechanism

This lets us drop all the code for handling the mp4toannexb
conversion.

avfilter/vf_maskedmerge: fix bug when copying >8bit plane(s)

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_premultiply: add planes option

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_maskedclamp: fix bug when copying >8bit plane(s)

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec/decode: also update consumed bytes on last_pkt_props->size

avfilter/vf_maskedclamp: limit overshot and undershot to UINT16_MAX

Signed-off-by: Paul B Mahol <onemda@gmail.com>

ffmpeg: do not report EOF on filters as an error.

Also print the error message in case of real error.

avcodec/dnxhd_parser: fix parsing interlaced video, simplify code

There appears to be no need to treat interlaced videos differently,
also that code is flawed, as for at least one input cur_field would
be always 0.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

tests: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

examples: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

ff*: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

avfilter: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

avdevice: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

avformat: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

avcodec: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

Merge commit '03a80925effc2698d21dc0b00290eecf42dd9e68'

* commit '03a80925effc2698d21dc0b00290eecf42dd9e68':
  lavc: add a bitstream filter for splitting VP9 superframes

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

Merge commit '8fb4210ad8785c01fccf2fc59af6a6fa2892b6b2'

* commit '8fb4210ad8785c01fccf2fc59af6a6fa2892b6b2':
  qsvdec_h2645: switch to the new generic filtering mechanism

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

Merge commit '972c71e9cb63e24f57ee481e413199c7d88a8813'

* commit '972c71e9cb63e24f57ee481e413199c7d88a8813':
  lavc: add support for filtering packets before decoding

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

avcodec/bsf: Check for packet payload when setting BSF EOF flag.

Set BSF EOF flag only if pkt == NULL or both data and
side data are not present in packet.

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

Revert "avcodec/bsf: Forbid packet without payload in av_bsf_send_packet"

This reverts commit bfdca87ab55c7f69087d962dc47aa45c8c6436fb.

Packets with no data or side data will be valid EOF signal in an
upcoming merge.

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

avcodec/crystalhd: Adapt to new new decode API

The new new decode API requires the decoder to ask for the next input
packet, and it cannot just return EAGAIN if that packet cannot be
processed yet. This means we must finally confront how we get this
decoder to block when the input buffer is full and no output frames
are ready yet.

In the end, that isn't too hard to achieve - the main trick seems to
be that you have to aggressively poll the hardware - it doesn't seem
to make any forward progress if you sleep.

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

Merge commit '061a0c14bb5767bca72e3a7227ca400de439ba09'

* commit '061a0c14bb5767bca72e3a7227ca400de439ba09':
  decode: restructure the core decoding code

CUVID decoder adapted by wm4.

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

Merge commit '549d0bdca53af7a6e0c612ab4b03baecf3a5878f'

* commit '549d0bdca53af7a6e0c612ab4b03baecf3a5878f':
  decode: be more explicit about storing the last packet properties

Also copy pkt->size in extract_packet_props(), as it's needed for
AVFrame.pkt_size

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

libavutil/thread.h: Fixed g++ build error when ASSERT_LEVEL is greater than 1

Purpose: libavutil/thread.h: Fixed g++ build error when ASSERT_LEVEL
is greater than 1.  This is only relevant when thread.h is included by
C++ files.  In this case, the relevant code is only defined if
HAVE_PTHREADS is defined as 1.  Use configure --assert-level=2 to do
so.

Note: Issue discovered as a result of Coverity build failure.  Cause
of build failure pinpointed by Hendrik Leppkes.

Comments:

-- libavutil/thread.h: Altered ASSERT_PTHREAD_NORET definition such
   that it uses av_make_error_string instead of av_err2str().
   av_err2str() uses a "parenthesized type followed by an initializer
   list", which is apparently not valid C++.  This issue started
   occurring because thread.h is now included by the DeckLink C++
   files.  The alteration does the equivalent of what av_err2str()
   does, but instead declares the character buffer as a local
   variable.

Signed-off-by: Marton Balint <cus@passwd.hu>

ffmpeg; check return code of avcodec_send_frame when flushing encoders

Fixes Coverity CID 1404841.

Signed-off-by: Marton Balint <cus@passwd.hu>

avcodec/h264_cavlc: Fix undefined behavior on qscale overflow

Fixes: 1214/clusterfuzz-testcase-minimized-6130606599569408

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avfilter/interlace: change lowpass_line function prototype

Signed-off-by: Thomas Mundt <tmundt75@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avfilter/avf_avectorscope: Assert that format is valid

This should help coverity realize that src[] is inited

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avfilter: add doubleweave filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec/utvideodec: fix gradient prediction when stride does not match width

Fixes #6340.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec/utvideodec: fix decoding odd sizes with interlaced video with some formats

Fixes #6316.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

doc/filters: deflicker size option value is in frames

Signed-off-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Paul B Mahol <onemda@gmail.com> (in #ffmpeg-devel IRC)

avfilter: add deflicker filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avformat/webmdashenc: Validate the 'streams' adaptation sets parameter

It should not be a value larger than the number of streams we have,
or it will cause invalid reads and/or SIGSEGV.

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

avformat/webmdashenc: Require the 'adaptation_sets' option to be set

This seems to be non-optional, and if the muxer is run without it,
strlen() is run on NULL, causing a segfault.

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