This is a common use case.

* commit '69062d0f':
  h264_metadata: Use common SEI addition function

Minor changes because the following patch is already present.
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit 'a2ca8ed9':
  cbs_h264: Add utility functions to insert/delete SEI messages
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit 'ce5870a3':
  cbs: Refcount all the things!

Some changes for bitstream API.
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit '13ca5d34':
  cbs_h264: Add hack for pic_timing with no active SPS

Partially fixes #6896 - the sample stream from that ticket now works, but
more obscure cases can still fail.
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit '0e4c166c':
  cbs_h2645: Remove active ps references when it is replaced
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit 'a3daecd6':
  cbs: Demote the "decomposition unimplemented" warning
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit '67eb2b16':
  vaapi_h265: Mark unused entries in RefPicList[01] as explicitly invalid
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit '216c44df':
  vaapi_encode: Destroy output buffer pool before VA context
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit 'c8e135ea':
  vaapi_encode: Allocate slice structures and parameter buffers dynamically

Already present as e4a6eb70, one minor
fix for libav merged.
Merged-by: Mark Thompson <sw@jkqxz.net>

Also mention -map in the -vn, -an, and -sn options.

Fixes #7036.
Signed-off-by: Lou Logan <lou@lrcd.com>

* commit '254e728d':
  cbs: Minor comment fixes / cosmetics

Mostly already present, one small fix.
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit '1d12a545':
  cbs: Add an explicit type for coded bitstream unit types

Mostly already present from 6734eef6, two
minor message changes are merged.
Merged-by: Mark Thompson <sw@jkqxz.net>

* commit '26513529':
  cbs: Allocate the context inside the init function

This commit is a noop, see 6734eef6Merged-by: Mark Thompson <sw@jkqxz.net>

This makes it easier for users of the CBS API to get alloc/free right -
all subelements use the buffer API so that it's clear how to free them.
It also allows eliding some redundant copies: the packet -> fragment copy
disappears after this change if the input packet is refcounted, and more
codec-specific cases are now possible (but not included in this patch).

If there is exactly one possible SPS but it is not yet active then just
assume that it should be the active one.

This is harmless and should not be a warning - unknown units are passed
through to the write functions unchanged, and no other code will interact
with them.

The iHD driver looks at entries beyond num_ref_idx_l[01]_active_minus1
for unknown reasons.

The buffers are created associated with the context, so they should be
destroyed before the context is.  This is enforced by the iHD driver.

This removes the arbitrary limit on the allowed number of slices and
parameter buffers.

From ffmpeg commit e4a6eb70.
Signed-off-by: Mark Thompson <sw@jkqxz.net>

Also fix conversion specifiers used for the unit type.

... instead of making callers allocate it themselves.  This is more
consistent with other APIs in libav.

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

Fixes: signed integer overflow: -2072 + -2147483646 cannot be represented in type 'int'
Fixes: 6097/clusterfuzz-testcase-minimized-5034145253163008

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

Fixes: 6037/clusterfuzz-testcase-minimized-5030249784934400
Fixes: signed integer overflow: 256 * 16992036 cannot be represented in type 'int'

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

Fixes: signed integer overflow: -1625276744 + -1041893960 cannot be represented in type 'int'
Fixes: 5948/clusterfuzz-testcase-minimized-5791479856365568

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

Fixes: 5918/clusterfuzz-testcase-minimized-5120505435652096

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

Fixes: runtime error: signed integer overflow: 361 * -6295541 cannot be represented in type 'int'
Fixes: 5911/clusterfuzz-testcase-minimized-6450382197751808

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

Fixes: Timeout
Fixes: 5796/clusterfuzz-testcase-minimized-5206729085157376

Does someone have a valid sample that triggers this path ?

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

err is already an AVERROR.
Signed-off-by: James Almer <jamrial@gmail.com>

Fixes potential memory leaks
Signed-off-by: James Almer <jamrial@gmail.com>

Defined in a recent revision of https://www.webmproject.org/docs/container/

This prevents storing the contents of CodecPrivate into extradata for
a codec that doesn't need nor expect any. It will among other things
prevent matroska specific binary data from being dumped onto other
formats during remuxing.
Signed-off-by: James Almer <jamrial@gmail.com>

FF_API_DEBUG_MV has been disabled. Related options removed from docs.

Mention of non-existent debug option value 'pts' also removed.

* commit 'cc1c94da':
  configure: Pass the right machine types to dlltool for arm and arm64 mingw
Merged-by: James Almer <jamrial@gmail.com>

* commit '97eee953':
  Revert "configure: Stop using dlltool to create an import library"

This commit is a noop, see 6d8bef8cMerged-by: James Almer <jamrial@gmail.com>

The GCC generated import libraries don't work properly when being imported
by MSVC, resulting in missing symbols at runtime.

This reverts 5b5365fe and partially reverts changes from 98a9b1f0