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  • pr-ffstaging-28/softworkz/submit_long_filenames-v3

    a5268800 · avformat/os_support: Support long file names on Windows · 
    Support long file names on Windows

This patchset adds support for long file and directory paths on Windows. The
implementation follows the same logic that .NET is using internally, with
the only exception that it doesn't expand short path components in 8.3
format. .NET does this as the same function is also used for other purposes,
but in our case, that's not required. Short (8.3) paths are working as well
with the extended path prefix, even when longer than 260.

Successfully tested:

 * Regular paths wth drive letter
 * Regular UNC paths
 * Long paths wth drive letter
 * Long paths wth drive letter and forward slashes
 * Long UNC paths
 * Prefixed paths wth drive letter
 * Prefixed UNC paths

I have kept the individual functions separate on purpose, to make it easy to
compare with the .NET impl. (compilers should inlinie those anyway)

v2

 * wchar_filename: Improve comments and function documentation
 * os_support: adjust defines to use win32_stat

v3

 * removed length check in path_is_extended()
 * added path_is_device_path() check in add_extended_prefix()
 * add_extended_prefix(): clarified doc and add checks
 * clarified string allocation length calculation
 * replaced 260 with MAX_PATH
 * removed redundant checks after normalization

softworkz (2):
  avutil/wchar_filename,file_open: Support long file names on Windows
  avformat/os_support: Support long file names on Windows

 libavformat/os_support.h   |  26 ++++--
 libavutil/file_open.c      |   2 +-
 libavutil/wchar_filename.h | 166 +++++++++++++++++++++++++++++++++++++
 3 files changed, 188 insertions(+), 6 deletions(-)

base-commit: e3580f60775c897c3b13b178c57ab191ecc4a031

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.28.v3.ffstaging.FFmpeg.1652736203.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.28.ffstaging.FFmpeg.1652435595.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.28.v2.ffstaging.FFmpeg.1652653071.ffmpegagent@gmail.com

  • pr-ffstaging-28/softworkz/submit_long_filenames-v2

    8ecbafe2 · avformat/os_support: Support long file names on Windows · 
    Support long file names on Windows

This patchset adds support for long file and directory paths on Windows. The
implementation follows the same logic that .NET is using internally, with
the only exception that it doesn't expand short path components in 8.3
format. .NET does this as the same function is also used for other purposes,
but in our case, that's not required. Short (8.3) paths are working as well
with the extended path prefix, even when longer than 260.

Successfully tested:

 * Regular paths wth drive letter
 * Regular UNC paths
 * Long paths wth drive letter
 * Long paths wth drive letter and forward slashes
 * Long UNC paths
 * Prefixed paths wth drive letter
 * Prefixed UNC paths

I have kept the individual functions separate on purpose, to make it easy to
compare with the .NET impl. (compilers should inlinie those anyway)

v2

 * wchar_filename: Improve comments and function documentation
 * os_support: adjust defines to use win32_stat

softworkz (2):
  avutil/wchar_filename,file_open: Support long file names on Windows
  avformat/os_support: Support long file names on Windows

 libavformat/os_support.h   |  26 +++++--
 libavutil/file_open.c      |   2 +-
 libavutil/wchar_filename.h | 156 +++++++++++++++++++++++++++++++++++++
 3 files changed, 178 insertions(+), 6 deletions(-)

base-commit: d2d8b9b972ba2df6b2a2ebe29f5307cbb7a69c33

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.28.v2.ffstaging.FFmpeg.1652653071.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.28.ffstaging.FFmpeg.1652435595.ffmpegagent@gmail.com

  • pr-ffstaging-27/softworkz/submit_version_include-v3

    50b3db34 · fftools/opt_common: add includes of avf headers for clarity · 
    fftools/opt_common: add includes of avf headers for clarity

From: softworkz <softworkz@hotmail.com>

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.27.v3.ffstaging.FFmpeg.1652642602645.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.27.ffstaging.FFmpeg.1652435196848.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.27.v2.ffstaging.FFmpeg.1652527083214.ffmpegagent@gmail.com

  • pr-ffstaging-12/softworkz/master-upstream_asf_4-v4

    78ed5aeb · libavformat/asfdec: fix variable types and add checks for unsupported values · 
    libavformat/asf: fix handling of byte array length values

The spec allows attachment sizes of up to UINT32_MAX while we can handle
only sizes up to INT32_MAX (in downstream code)

The debug.assert in get_tag didn't really address this, and truncating the
value_len in calling methods cannot be used because the length value is
required in order to continue parsing. This adds a check with log message in
ff_asf_handle_byte_array to handle those (rare) cases.

v2: Rebased & PING v3: Adjustments suggested by Michael v4: 1 of 11 merged,
10 to go..

softworkz (10):
  libavformat/asf: fix handling of byte array length values
  libavformat/asfdec: fix get_value return type and add checks for
  libavformat/asfdec: fix type of value_len
  libavformat/asfdec: fixing get_tag
  libavformat/asfdec: implement parsing of GUID values
  libavformat/asfdec: fix macro definition and use
  libavformat/asfdec: remove variable redefinition in inner scope
  libavformat/asfdec: ensure variables are initialized
  libavformat/asfdec: fix parameter type in asf_read_stream_propertie()
  libavformat/asfdec: fix variable types and add checks for unsupported
    values

 libavformat/asf.c      |   8 +-
 libavformat/asf.h      |   2 +-
 libavformat/asfdec_f.c | 338 +++++++++++++++++++++++++++--------------
 3 files changed, 229 insertions(+), 119 deletions(-)

base-commit: e6f0cec88041449475f37b82b76699d2f7b5b124

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.12.v4.ffstaging.FFmpeg.1652561722.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.12.ffstaging.FFmpeg.1640186030.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.12.v2.ffstaging.FFmpeg.1651916204.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.12.v3.ffstaging.FFmpeg.1651978882.ffmpegagent@gmail.com

  • pr-ffstaging-27/softworkz/submit_version_include-v2

    f011be10 · fftools/opt_common: add missing include of avf/version.h · 
    fftools/opt_common: add missing include of avf/version.h

From: softworkz <softworkz@hotmail.com>

required for PRINT_LIB_INFO(avfilter...

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.27.v2.ffstaging.FFmpeg.1652527083214.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.27.ffstaging.FFmpeg.1652435196848.ffmpegagent@gmail.com

  • pr-ffstaging-28/softworkz/submit_long_filenames-v1

    acd81c61 · avformat/os_support: Support long file names on Windows · 
    Support long file names on Windows

This patchset adds support for long file and directory paths on Windows. The
implementation follows the same logic that .NET is using internally, with
the only exception that it doesn't expand short path components in 8.3
format. .NET does this as the same function is also used for other purposes,
but in our case, that's not required. Short (8.3) paths are working as well
with the extended path prefix, even when longer than 260.

Successfully tested:

 * Regular paths wth drive letter
 * Regular UNC paths
 * Long paths wth drive letter
 * Long paths wth drive letter and forward slashes
 * Long UNC paths
 * Prefixed paths wth drive letter
 * Prefixed UNC paths

I have kept the individual functions separate on purpose, to make it easy to
compare with the .NET impl. (compilers should inlinie those anyway)

softworkz (2):
  avutil/wchar_filename,file_open: Support long file names on Windows
  avformat/os_support: Support long file names on Windows

 libavformat/os_support.h   |   8 +--
 libavutil/file_open.c      |   2 +-
 libavutil/wchar_filename.h | 123 +++++++++++++++++++++++++++++++++++++
 3 files changed, 128 insertions(+), 5 deletions(-)

base-commit: d2d8b9b972ba2df6b2a2ebe29f5307cbb7a69c33

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.28.ffstaging.FFmpeg.1652435595.ffmpegagent@gmail.com

  • pr-ffstaging-27/softworkz/submit_version_include-v1

    db6ab867 · fftools/opt_common: add missing include of avf/version.h · 
    fftools/opt_common: add missing include of avf/version.h

From: softworkz <softworkz@hotmail.com>

required for PRINT_LIB_INFO(avfilter...

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.27.ffstaging.FFmpeg.1652435196848.ffmpegagent@gmail.com

  • pr-ffstaging-26/softworkz/submit_replace_fopen-v2

    e47287be · avfilter: use av_fopen_utf8() instead of plain fopen() · 
    avfilter: use av_fopen_utf8() instead of plain fopen()

From: softworkz <softworkz@hotmail.com>

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.26.v2.ffstaging.FFmpeg.1652122322889.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.26.ffstaging.FFmpeg.1651945149.ffmpegagent@gmail.com

  • pr-ffstaging-23/rcombs/vtdec-hevc-3byte-v1

    bf15fa33 · lavc/h264_ps: always include the stop bit in [s|p]ps->data · 
    lavc/videotoolboxdec: improve HEVC stream compatibility

 * Improve logging in error conditions
 * Improve NAL-escape function behavior
 * Fix some syntax issues in hvcc
 * Correctly escape NALs in hvcc
 * Make sure we expose the stop bits in H264 PS NALs

These changes fix support for several samples I've found or generated
locally.

rcombs (6):
  lavc/videotoolboxdec: warn on nonzero status in the callback
  lavc/videotoolboxdec: fix escaping sequential zero sequences
  lavc/videotoolboxdec: fix generating HEVC
    general_profile_compatibility_flags
  lavc/videotoolboxdec: fix writing too many 1 bits for the reserved
    fields
  lavc/videotoolboxdec: insert emu-prevention bytes for HEVC as well
  lavc/h264_ps: always include the stop bit in [s|p]ps->data

 libavcodec/h264_ps.c      |  8 ++++++++
 libavcodec/videotoolbox.c | 32 ++++++++++++++++++++------------
 2 files changed, 28 insertions(+), 12 deletions(-)

base-commit: f77ac5131cd1c623aa54ec432cba0d922e9aa470

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.23.ffstaging.FFmpeg.1652120184.ffmpegagent@gmail.com

  • pr-ffstaging-12/softworkz/master-upstream_asf_4-v3

    bbeee5f2 · libavformat/asfdec: fix variable types and add checks for unsupported values · 
    libavformat/asf: fix handling of byte array length values

The spec allows attachment sizes of up to UINT32_MAX while we can handle
only sizes up to INT32_MAX (in downstream code)

The debug.assert in get_tag didn't really address this, and truncating the
value_len in calling methods cannot be used because the length value is
required in order to continue parsing. This adds a check with log message in
ff_asf_handle_byte_array to handle those (rare) cases.

v2: Rebased & PING v3: Adjustments suggested by Michael

softworkz (11):
  libavformat/asf: fix handling of byte array length values
  libavformat/asfdec: fix get_value return type and add checks for
  libavformat/asfdec: fix type of value_len
  libavformat/asfdec: fixing get_tag
  libavformat/asfdec: implement parsing of GUID values
  libavformat/asfdec: remove unused parameters
  libavformat/asfdec: fix macro definition and use
  libavformat/asfdec: remove variable redefinition in inner scope
  libavformat/asfdec: ensure variables are initialized
  libavformat/asfdec: fix parameter type in asf_read_stream_propertie()
  libavformat/asfdec: fix variable types and add checks for unsupported
    values

 libavformat/asf.c      |   8 +-
 libavformat/asf.h      |   2 +-
 libavformat/asfdec_f.c | 368 ++++++++++++++++++++++++++---------------
 3 files changed, 244 insertions(+), 134 deletions(-)

base-commit: f1c19867d72a14699277175101b2bcf1e333af88

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.12.v3.ffstaging.FFmpeg.1651978882.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.12.ffstaging.FFmpeg.1640186030.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.12.v2.ffstaging.FFmpeg.1651916204.ffmpegagent@gmail.com

  • pr-ffstaging-26/softworkz/submit_replace_fopen-v1

    3266640a · avfilter: use av_fopen_utf8() instead of plain fopen() · 
    use av_fopen_utf8() instead of plain fopen()

Unify file access operations by replacing usages of direct calls to posix
fopen()

softworkz (2):
  fftools: use av_fopen_utf8() instead of plain fopen()
  avfilter: use av_fopen_utf8() instead of plain fopen()

 fftools/cmdutils.c            | 6 +++---
 fftools/ffmpeg.c              | 4 ++--
 fftools/opt_common.c          | 2 +-
 libavfilter/af_firequalizer.c | 2 +-
 libavfilter/vf_deshake.c      | 2 +-
 libavfilter/vf_signature.c    | 4 ++--
 libavfilter/vf_ssim.c         | 2 +-
 libavfilter/vf_vmafmotion.c   | 2 +-
 8 files changed, 12 insertions(+), 12 deletions(-)

base-commit: f3b7ba21ba49b32b4476a8c7c5a9bcdad15e3943

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.26.ffstaging.FFmpeg.1651945149.ffmpegagent@gmail.com

  • pr-ffstaging-12/softworkz/master-upstream_asf_4-v2

    f606f322 · libavformat/asfdec: fix variable types and add checks for unsupported values · 
    libavformat/asf: fix handling of byte array length values

The spec allows attachment sizes of up to UINT32_MAX while we can handle
only sizes up to INT32_MAX (in downstream code)

The debug.assert in get_tag didn't really address this, and truncating the
value_len in calling methods cannot be used because the length value is
required in order to continue parsing. This adds a check with log message in
ff_asf_handle_byte_array to handle those (rare) cases.

v2: Rebased & PING

softworkz (11):
  libavformat/asf: fix handling of byte array length values
  libavformat/asfdec: fix get_value return type and add checks for
  libavformat/asfdec: fix type of value_len
  libavformat/asfdec: fixing get_tag
  libavformat/asfdec: implement parsing of GUID values
  libavformat/asfdec: remove unused parameters
  libavformat/asfdec: fix macro definition and use
  libavformat/asfdec: remove variable redefinition in inner scope
  libavformat/asfdec: ensure variables are initialized
  libavformat/asfdec: fix parameter type in asf_read_stream_propertie()
  libavformat/asfdec: fix variable types and add checks for unsupported
    values

 libavformat/asf.c      |  12 +-
 libavformat/asf.h      |   2 +-
 libavformat/asfdec_f.c | 349 ++++++++++++++++++++++++++---------------
 3 files changed, 232 insertions(+), 131 deletions(-)

base-commit: f3b7ba21ba49b32b4476a8c7c5a9bcdad15e3943

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.12.v2.ffstaging.FFmpeg.1651916204.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.12.ffstaging.FFmpeg.1640186030.ffmpegagent@gmail.com

  • pr-ffstaging-25/softworkz/derive_devices-v1

    023597a5 · avfilter/hwmap,hwupload: use new av_hwdevice_ctx_get_or_create_derived method · 
    Add derive-device function which searches for existing devices in both directions

This is an updated version of: [PATCH v4 1/1] avutils/hwcontext: When
deriving a hwdevice, search for existing device in both directions

There has been an objection that the earlier patchset would change API
behavior, and that this change should be limited to ffmpeg cli.

To achieve this, the API behavior is left unchanged now and a new function
av_hwdevice_ctx_get_or_create_derived() is added and used by the hwupload
and hwmap filters.

softworkz (3):
  avutils/hwcontext: add derive-device function which searches for
    existing devices in both directions
  lavu: bump minor version and add doc/APIchanges entry for
    av_hwdevice_ctx_get_or_create_derived()
  avfilter/hwmap,hwupload: use new av_hwdevice_ctx_get_or_create_derived
    method

 doc/APIchanges                 |  3 ++
 libavfilter/vf_hwmap.c         |  4 +-
 libavfilter/vf_hwupload.c      |  2 +-
 libavutil/hwcontext.c          | 72 +++++++++++++++++++++++++++++++---
 libavutil/hwcontext.h          | 20 ++++++++++
 libavutil/hwcontext_internal.h |  6 +++
 libavutil/hwcontext_qsv.c      | 13 ++++--
 libavutil/version.h            |  4 +-
 8 files changed, 110 insertions(+), 14 deletions(-)

base-commit: eef652ca9c893a84c6430fcdd53eed186c299d82

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.25.ffstaging.FFmpeg.1651349262.ffmpegagent@gmail.com

  • pr-ffstaging-22/softworkz/patch-2-v1

    2696b164 · Update ReadMe.md for PR submission and reference Developer Documentation · 
    Update ReadMe.md for PR submission and reference Developer Documentation

From: softworkz <softworkz@hotmail.com>

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.22.ffstaging.FFmpeg.1643923701194.ffmpegagent@gmail.com

  • pr-ffstaging-21/brycechesternewman/patch-poster-time-tag-v1

    ee3aac1d · [PATCH] libavformat/mov: Expose Quicktime poster_time value as metadata TAG. · 
    [PATCH] libavformat/mov: Expose Quicktime poster_time value as metadata TAG.

From: Bryce Chester Newman <bryce.newman@gettyimages.com>

I need the ability to derive the poster time found in the mvhd, so I can
use that value to create a thumbnail from ffmpeg. More details can be
found here
https://www.mail-archive.com/ffmpeg-user@ffmpeg.org/msg30003.html

Signed-off-by: Bryce Chester Newman <bryce.newman@gettyimages.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.21.ffstaging.FFmpeg.1643844144096.ffmpegagent@gmail.com

  • pr-ffstaging-20/softworkz/submit_md5-v3

    e54769c6 · libavutil/tests/md5: Avoid warnings · 
    libavutil/tests/md5: Avoid warnings

From: softworkz <softworkz@hotmail.com>

Those are always showing up on Patchwork
when FATE tests are failing, covering
some possibly more useful information.

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.20.v3.ffstaging.FFmpeg.1642729686725.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.20.ffstaging.FFmpeg.1642727870274.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.20.v2.ffstaging.FFmpeg.1642729284250.ffmpegagent@gmail.com

  • pr-ffstaging-20/softworkz/submit_md5-v2

    47230544 · libavutil/tests/md5: Avoid warnings · 
    libavutil/tests/md5: Avoid warnings

From: softworkz <softworkz@hotmail.com>

Those are always showing up on Patchwork
when FATE tests are failing, covering
some possibly more useful information.

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.20.v2.ffstaging.FFmpeg.1642729284250.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.20.ffstaging.FFmpeg.1642727870274.ffmpegagent@gmail.com

  • pr-ffstaging-20/softworkz/submit_md5-v1

    3910d81f · libavutil/tests/md5: Avoid warnings · 
    libavutil/tests/md5: Avoid warnings

From: softworkz <softworkz@hotmail.com>

Those are always showing up on Patchwork
when FATE tests are failing, covering
some possibly more useful information.

Signed-off-by: softworkz <softworkz@hotmail.com>

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.20.ffstaging.FFmpeg.1642727870274.ffmpegagent@gmail.com

  • pr-ffstaging-18/softworkz/submit_subfiltering-v3

    03e1a98e · avcodec/dvbsubdec: Fix conditions for fallback to default resolution · 
    Subtitle Filtering 2022

Subtitle Filtering 2022
=======================

This is a substantial update to the earlier subtitle filtering patch series.
A primary goal has been to address others' concerns as much as possible on
one side and to provide more clarity and control over the way things are
working. Clarity is is specifically important to allow for a better
understanding of the need for a subtitle start pts value that can be
different from the frame's pts value. This is done by refactoring the
subtitle timing fields in AVFrame, adding a frame field to indicate repeated
subtitle frames, and finally the full removal of the heartbeat
functionality, replaced by a new 'subfeed' filter that provides different
modes for arbitrating subtitle frames in a filter graph. Finally, each
subtitle filter's documentation has been amended by a section describing the
filter's timeline behavior (in v3 update).

The update also includes major improvements to graphicsub2text and lots of
other details.

Versioning is restarting at v1 due to the new submission procedure.

v3 - Rebase
===========

due to merge conflicts - apologies.

Changes in v2
=============

 * added .gitattributes file to enforce binary diffs for the test refs that
   cannot be applied when being sent via e-mail
 * perform filter graph re-init due to subtitle "frame size" change only
   when the size was unknown before and not set via -canvas_size
 * overlaytextsubs: Make sure to request frames on the subtitle input
 * avfilter/splitcc: Start parsing cc data on key frames only
 * avcodec/webvttenc: Don't encode ass drawing codes and empty lines
 * stripstyles: fix mem leak
 * gs2t: improve color detection
 * gs2t: empty frames must not be skipped
 * subfeed: fix name
 * textmod: preserve margins
 * added .gitattributes file to enforce binary diffs for the test refs that
   cannot be applied when being sent via e-mail
 * perform filter graph re-init due to subtitle "frame size" change only
   when the size was unknown before and not set via -canvas_size
 * avcodec/dvbsubdec: Fix conditions for fallback to default resolution
 * Made changes suggested by Andreas
 * Fixed failing command line reported by Michael

Changes from previous version v24:

AVFrame
=======

 * Removed sub_start_time The start time is now added to the subtitle
   start_pts during decoding The sub_end_time field is adjusted accordingly
 * Renamed sub_end_time to duration which it is effectively after removing
   the start_time
 * Added a sub-struct 'subtitle_timing' to av frame Contains subtitle_pts
   renamed to 'subtitle_timing.start_pts' and 'subtitle_timing.duration'
 * Change both fields to (fixed) time_base AV_TIMEBASE
 * add repeat_sub field provides a clear indication whether a subtitle frame
   is an actual subtitle event or a repeated subtitle frame in a filter
   graph

Heartbeat Removal
=================

 * completely removed the earlier heartbeat implementation
 * filtering arbitration is now implemented in a new filter: 'subfeed'
 * subfeed will be auto-inserted for compatiblity with sub2video command
   lines
 * the new behavior is not exactly identical to the earlier behavior, but it
   basically allows to achieve the same results

New 'subfeed' Filter
====================

 * a versatile filter for solving all kinds of problems with subtile frame
   flow in filter graphs
 * Can be inserted at any position in a graph
 * Auto-inserted for sub2video command lines (in repeat-mode)
 * Allows duration fixup delay input frames with unknown duration and infer
   duration from start of subsequent frame
 * Provides multiple modes of operation:
   * repeat mode (default) Queues input frames Outputs frames at a fixed
     (configurable) rate Either sends a matching input frame (repeatedly) or
     empty frames otherwise
   * scatter mode similar to repeat mode, but splits input frames by
     duration into small segments with same content
   * forward mode No fixed output rate Useful in combination with duration
     fixup or overlap fixup

ffmpeg Tool Changes
===================

 * delay subtitle output stream initialization (like for audio and video)
   This is needed for example when a format header depends on having
   received an initial frame to derive certain header values from
 * decoding: set subtitle frame size from decoding context
 * re-init graph when subtitle size changes
 * always insert subscale filter for sub2video command lines (to ensure
   correct scaling)

Subtitle Encoding
=================

 * ignore repeated frames for encoding based on repeat_sub field in AVFrame
 * support multi-area encoding for text subtitles Subtitle OCR can create
   multiple areas at different positions. Previously, the texts were always
   squashed into a single area ('subtitle rect'), which was not ideal.
   Multiple text areas are now generally supported:
   * ASS Encoder Changed to use the 'receive_packet' encoding API A single
     frame with multiple text areas will create multiple packets now
   * All other text subtitle encoders A newline is inserted between the text
     from multiple areas

graphicsub2text (OCR)
=====================

 * enhanced preprocessing
   * using elbg algorithm for color quantization
   * detection and removal of text outlines
   * map-based identification of colors per word (text, outline, background)
 * add option for duration fixup
 * add option to dump preprocessing bitmaps
 * Recognize formatting and apply as ASS inline styles
   * per word(!)
   * paragraph alignment
   * positioning
   * font names
   * font size
   * font style (italic, underline, bold)
   * text color, outline color

Other Filter Changes
====================

 * all: Make sure to forward all link properties (time base, frame rate, w,
   h) where appropriate
 * overlaytextsubs: request frames on the subtitle input
 * overlaytextsubs: disable read-order checking
 * overlaytextsubs: improve implementation of render_latest_only
 * overlaytextsubs: ensure equal in/out video formats
 * splitcc: derive framerate from realtime_latency
 * graphicsub2video: implement caching of converted frames
 * graphicsub2video: use 1x1 output frame size as long as subtitle size is
   unknown (0x0)

Plus a dozen of things I forgot..

softworkz (26):
  avcodec,avutil: Move enum AVSubtitleType to avutil, add new and
    deprecate old values
  avutil/frame: Prepare AVFrame for subtitle handling
  avcodec/subtitles: Introduce new frame-based subtitle decoding API
  avfilter/subtitles: Update vf_subtitles to use new decoding api
  avcodec,avutil: Move ass helper functions to avutil as avpriv_ and
    extend ass dialog parsing
  avcodec/subtitles: Replace deprecated enum values
  fftools/play,probe: Adjust for subtitle changes
  avfilter/subtitles: Add subtitles.c for subtitle frame allocation
  avfilter/avfilter: Handle subtitle frames
  avfilter/avfilter: Fix hardcoded input index
  avfilter/sbuffer: Add sbuffersrc and sbuffersink filters
  avfilter/overlaygraphicsubs: Add overlaygraphicsubs and
    graphicsub2video filters
  avfilter/overlaytextsubs: Add overlaytextsubs and textsubs2video
    filters
  avfilter/textmod: Add textmod, censor and show_speaker filters
  avfilter/stripstyles: Add stripstyles filter
  avfilter/splitcc: Add splitcc filter for closed caption handling
  avfilter/graphicsub2text: Add new graphicsub2text filter (OCR)
  avfilter/subscale: Add filter for scaling and/or re-arranging
    graphical subtitles
  avfilter/subfeed: add subtitle feed filter
  avcodec/subtitles: Migrate subtitle encoders to frame-based API
  fftools/ffmpeg: Introduce subtitle filtering and new frame-based
    subtitle encoding
  avutil/ass_split: Add parsing of hard-space tags (\h)
  avcodec/webvttenc: convert hard-space tags to &nbsp;
  doc/APIchanges: update for subtitle filtering changes
  avcodec/webvttenc: Don't encode drawing codes and empty lines
  avcodec/dvbsubdec: Fix conditions for fallback to default resolution

 configure                                     |    7 +-
 doc/APIchanges                                |   24 +
 doc/filters.texi                              |  756 ++++++++++
 fftools/ffmpeg.c                              |  501 +++----
 fftools/ffmpeg.h                              |   13 +-
 fftools/ffmpeg_filter.c                       |  235 +++-
 fftools/ffmpeg_hw.c                           |    2 +-
 fftools/ffmpeg_opt.c                          |    3 +-
 fftools/ffplay.c                              |  102 +-
 fftools/ffprobe.c                             |   47 +-
 libavcodec/Makefile                           |   56 +-
 libavcodec/ass.h                              |  144 +-
 libavcodec/assdec.c                           |    4 +-
 libavcodec/assenc.c                           |  191 ++-
 libavcodec/avcodec.h                          |   32 +-
 libavcodec/ccaption_dec.c                     |   19 +-
 libavcodec/codec_desc.c                       |   11 +
 libavcodec/codec_desc.h                       |    8 +
 libavcodec/decode.c                           |   60 +-
 libavcodec/dvbsubdec.c                        |   53 +-
 libavcodec/dvbsubenc.c                        |   96 +-
 libavcodec/dvdsubdec.c                        |    2 +-
 libavcodec/dvdsubenc.c                        |  102 +-
 libavcodec/encode.c                           |   61 +-
 libavcodec/internal.h                         |   16 +
 libavcodec/jacosubdec.c                       |    2 +-
 libavcodec/libaribb24.c                       |    2 +-
 libavcodec/libzvbi-teletextdec.c              |   14 +-
 libavcodec/microdvddec.c                      |    7 +-
 libavcodec/movtextdec.c                       |    3 +-
 libavcodec/movtextenc.c                       |  126 +-
 libavcodec/mpl2dec.c                          |    2 +-
 libavcodec/pgssubdec.c                        |    2 +-
 libavcodec/realtextdec.c                      |    2 +-
 libavcodec/samidec.c                          |    2 +-
 libavcodec/srtdec.c                           |    2 +-
 libavcodec/srtenc.c                           |  116 +-
 libavcodec/subviewerdec.c                     |    2 +-
 libavcodec/tests/avcodec.c                    |    2 -
 libavcodec/textdec.c                          |    4 +-
 libavcodec/ttmlenc.c                          |  114 +-
 libavcodec/utils.c                            |  184 +++
 libavcodec/version.h                          |    2 +-
 libavcodec/webvttdec.c                        |    2 +-
 libavcodec/webvttenc.c                        |  127 +-
 libavcodec/xsubdec.c                          |    2 +-
 libavcodec/xsubenc.c                          |   88 +-
 libavfilter/Makefile                          |   16 +
 libavfilter/allfilters.c                      |   16 +-
 libavfilter/avfilter.c                        |   30 +-
 libavfilter/avfilter.h                        |   11 +
 libavfilter/avfiltergraph.c                   |    5 +
 libavfilter/buffersink.c                      |   54 +
 libavfilter/buffersink.h                      |    7 +
 libavfilter/buffersrc.c                       |   72 +
 libavfilter/buffersrc.h                       |    1 +
 libavfilter/formats.c                         |   22 +
 libavfilter/formats.h                         |    3 +
 libavfilter/internal.h                        |   19 +-
 libavfilter/sf_graphicsub2text.c              | 1132 +++++++++++++++
 libavfilter/sf_splitcc.c                      |  395 ++++++
 libavfilter/sf_stripstyles.c                  |  211 +++
 libavfilter/sf_subfeed.c                      |  366 +++++
 libavfilter/sf_subscale.c                     |  884 ++++++++++++
 libavfilter/sf_textmod.c                      |  710 ++++++++++
 libavfilter/subtitles.c                       |   63 +
 libavfilter/subtitles.h                       |   44 +
 libavfilter/vf_overlaygraphicsubs.c           |  765 ++++++++++
 libavfilter/vf_overlaytextsubs.c              |  678 +++++++++
 libavfilter/vf_subtitles.c                    |   56 +-
 libavutil/Makefile                            |    4 +
 {libavcodec => libavutil}/ass.c               |   91 +-
 libavutil/ass_internal.h                      |  135 ++
 {libavcodec => libavutil}/ass_split.c         |   37 +-
 .../ass_split_internal.h                      |   32 +-
 libavutil/frame.c                             |  211 ++-
 libavutil/frame.h                             |   85 +-
 libavutil/subfmt.c                            |   45 +
 libavutil/subfmt.h                            |  115 ++
 libavutil/version.h                           |    3 +-
 tests/ref/fate/.gitattributes                 |    3 +
 tests/ref/fate/filter-overlay-dvdsub-2397     |  182 +--
 tests/ref/fate/mov-mp4-ttml-dfxp              |    8 +-
 tests/ref/fate/mov-mp4-ttml-stpp              |    8 +-
 tests/ref/fate/sub-dvb                        |  162 ++-
 tests/ref/fate/sub-textenc                    |   10 +-
 tests/ref/fate/sub-ttmlenc                    |    8 +-
 tests/ref/fate/sub-webvttenc                  |   10 +-
 tests/ref/fate/sub2video                      | 1091 ++++++++++++++-
 tests/ref/fate/sub2video_basic                | 1239 +++++++++++++++--
 tests/ref/fate/sub2video_time_limited         |   78 +-
 91 files changed, 11077 insertions(+), 1392 deletions(-)
 create mode 100644 libavfilter/sf_graphicsub2text.c
 create mode 100644 libavfilter/sf_splitcc.c
 create mode 100644 libavfilter/sf_stripstyles.c
 create mode 100644 libavfilter/sf_subfeed.c
 create mode 100644 libavfilter/sf_subscale.c
 create mode 100644 libavfilter/sf_textmod.c
 create mode 100644 libavfilter/subtitles.c
 create mode 100644 libavfilter/subtitles.h
 create mode 100644 libavfilter/vf_overlaygraphicsubs.c
 create mode 100644 libavfilter/vf_overlaytextsubs.c
 rename {libavcodec => libavutil}/ass.c (65%)
 create mode 100644 libavutil/ass_internal.h
 rename {libavcodec => libavutil}/ass_split.c (93%)
 rename libavcodec/ass_split.h => libavutil/ass_split_internal.h (86%)
 create mode 100644 libavutil/subfmt.c
 create mode 100644 libavutil/subfmt.h
 create mode 100644 tests/ref/fate/.gitattributes

base-commit: dd17c86aa11feae2b86de054dd0679cc5f88ebab

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.18.v3.ffstaging.FFmpeg.1642649134.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.18.ffstaging.FFmpeg.1642122813.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.18.v2.ffstaging.FFmpeg.1642646916.ffmpegagent@gmail.com

  • pr-ffstaging-18/softworkz/submit_subfiltering-v2

    217d96c3 · avcodec/dvbsubdec: Fix conditions for fallback to default resolution · 
    Subtitle Filtering 2022

Subtitle Filtering 2022
=======================

This is a substantial update to the earlier subtitle filtering patch series.
A primary goal has been to address others' concerns as much as possible on
one side and to provide more clarity and control over the way things are
working. Clarity is is specifically important to allow for a better
understanding of the need for a subtitle start pts value that can be
different from the frame's pts value. This is done by refactoring the
subtitle timing fields in AVFrame, adding a frame field to indicate repeated
subtitle frames, and finally the full removal of the heartbeat
functionality, replaced by a new 'subfeed' filter that provides different
modes for arbitrating subtitle frames in a filter graph. Finally, each
subtitle filter's documentation has been amended by a section describing the
filter's timeline behavior (in v3 update).

The update also includes major improvements to graphicsub2text and lots of
other details.

Versioning is restarting at v1 due to the new submission procedure.

Changes in v2
=============

 * added .gitattributes file to enforce binary diffs for the test refs that
   cannot be applied when being sent via e-mail
 * perform filter graph re-init due to subtitle "frame size" change only
   when the size was unknown before and not set via -canvas_size
 * overlaytextsubs: Make sure to request frames on the subtitle input
 * avfilter/splitcc: Start parsing cc data on key frames only
 * avcodec/webvttenc: Don't encode ass drawing codes and empty lines
 * stripstyles: fix mem leak
 * gs2t: improve color detection
 * gs2t: empty frames must not be skipped
 * subfeed: fix name
 * textmod: preserve margins
 * added .gitattributes file to enforce binary diffs for the test refs that
   cannot be applied when being sent via e-mail
 * perform filter graph re-init due to subtitle "frame size" change only
   when the size was unknown before and not set via -canvas_size
 * avcodec/dvbsubdec: Fix conditions for fallback to default resolution
 * Made changes suggested by Andreas
 * Fixed failing command line reported by Michael

Changes from previous version v24:

AVFrame
=======

 * Removed sub_start_time The start time is now added to the subtitle
   start_pts during decoding The sub_end_time field is adjusted accordingly
 * Renamed sub_end_time to duration which it is effectively after removing
   the start_time
 * Added a sub-struct 'subtitle_timing' to av frame Contains subtitle_pts
   renamed to 'subtitle_timing.start_pts' and 'subtitle_timing.duration'
 * Change both fields to (fixed) time_base AV_TIMEBASE
 * add repeat_sub field provides a clear indication whether a subtitle frame
   is an actual subtitle event or a repeated subtitle frame in a filter
   graph

Heartbeat Removal
=================

 * completely removed the earlier heartbeat implementation
 * filtering arbitration is now implemented in a new filter: 'subfeed'
 * subfeed will be auto-inserted for compatiblity with sub2video command
   lines
 * the new behavior is not exactly identical to the earlier behavior, but it
   basically allows to achieve the same results

New 'subfeed' Filter
====================

 * a versatile filter for solving all kinds of problems with subtile frame
   flow in filter graphs
 * Can be inserted at any position in a graph
 * Auto-inserted for sub2video command lines (in repeat-mode)
 * Allows duration fixup delay input frames with unknown duration and infer
   duration from start of subsequent frame
 * Provides multiple modes of operation:
   * repeat mode (default) Queues input frames Outputs frames at a fixed
     (configurable) rate Either sends a matching input frame (repeatedly) or
     empty frames otherwise
   * scatter mode similar to repeat mode, but splits input frames by
     duration into small segments with same content
   * forward mode No fixed output rate Useful in combination with duration
     fixup or overlap fixup

ffmpeg Tool Changes
===================

 * delay subtitle output stream initialization (like for audio and video)
   This is needed for example when a format header depends on having
   received an initial frame to derive certain header values from
 * decoding: set subtitle frame size from decoding context
 * re-init graph when subtitle size changes
 * always insert subscale filter for sub2video command lines (to ensure
   correct scaling)

Subtitle Encoding
=================

 * ignore repeated frames for encoding based on repeat_sub field in AVFrame
 * support multi-area encoding for text subtitles Subtitle OCR can create
   multiple areas at different positions. Previously, the texts were always
   squashed into a single area ('subtitle rect'), which was not ideal.
   Multiple text areas are now generally supported:
   * ASS Encoder Changed to use the 'receive_packet' encoding API A single
     frame with multiple text areas will create multiple packets now
   * All other text subtitle encoders A newline is inserted between the text
     from multiple areas

graphicsub2text (OCR)
=====================

 * enhanced preprocessing
   * using elbg algorithm for color quantization
   * detection and removal of text outlines
   * map-based identification of colors per word (text, outline, background)
 * add option for duration fixup
 * add option to dump preprocessing bitmaps
 * Recognize formatting and apply as ASS inline styles
   * per word(!)
   * paragraph alignment
   * positioning
   * font names
   * font size
   * font style (italic, underline, bold)
   * text color, outline color

Other Filter Changes
====================

 * all: Make sure to forward all link properties (time base, frame rate, w,
   h) where appropriate
 * overlaytextsubs: request frames on the subtitle input
 * overlaytextsubs: disable read-order checking
 * overlaytextsubs: improve implementation of render_latest_only
 * overlaytextsubs: ensure equal in/out video formats
 * splitcc: derive framerate from realtime_latency
 * graphicsub2video: implement caching of converted frames
 * graphicsub2video: use 1x1 output frame size as long as subtitle size is
   unknown (0x0)

Plus a dozen of things I forgot..

softworkz (26):
  avcodec,avutil: Move enum AVSubtitleType to avutil, add new and
    deprecate old values
  avutil/frame: Prepare AVFrame for subtitle handling
  avcodec/subtitles: Introduce new frame-based subtitle decoding API
  avfilter/subtitles: Update vf_subtitles to use new decoding api
  avcodec,avutil: Move ass helper functions to avutil as avpriv_ and
    extend ass dialog parsing
  avcodec/subtitles: Replace deprecated enum values
  fftools/play,probe: Adjust for subtitle changes
  avfilter/subtitles: Add subtitles.c for subtitle frame allocation
  avfilter/avfilter: Handle subtitle frames
  avfilter/avfilter: Fix hardcoded input index
  avfilter/sbuffer: Add sbuffersrc and sbuffersink filters
  avfilter/overlaygraphicsubs: Add overlaygraphicsubs and
    graphicsub2video filters
  avfilter/overlaytextsubs: Add overlaytextsubs and textsubs2video
    filters
  avfilter/textmod: Add textmod, censor and show_speaker filters
  avfilter/stripstyles: Add stripstyles filter
  avfilter/splitcc: Add splitcc filter for closed caption handling
  avfilter/graphicsub2text: Add new graphicsub2text filter (OCR)
  avfilter/subscale: Add filter for scaling and/or re-arranging
    graphical subtitles
  avfilter/subfeed: add subtitle feed filter
  avcodec/subtitles: Migrate subtitle encoders to frame-based API
  fftools/ffmpeg: Introduce subtitle filtering and new frame-based
    subtitle encoding
  avutil/ass_split: Add parsing of hard-space tags (\h)
  avcodec/webvttenc: convert hard-space tags to &nbsp;
  doc/APIchanges: update for subtitle filtering changes
  avcodec/webvttenc: Don't encode drawing codes and empty lines
  avcodec/dvbsubdec: Fix conditions for fallback to default resolution

 configure                                     |    7 +-
 doc/APIchanges                                |   24 +
 doc/filters.texi                              |  756 ++++++++++
 fftools/ffmpeg.c                              |  501 +++----
 fftools/ffmpeg.h                              |   13 +-
 fftools/ffmpeg_filter.c                       |  235 +++-
 fftools/ffmpeg_hw.c                           |    2 +-
 fftools/ffmpeg_opt.c                          |    3 +-
 fftools/ffplay.c                              |  102 +-
 fftools/ffprobe.c                             |   47 +-
 libavcodec/Makefile                           |   56 +-
 libavcodec/ass.h                              |  144 +-
 libavcodec/assdec.c                           |    4 +-
 libavcodec/assenc.c                           |  191 ++-
 libavcodec/avcodec.h                          |   32 +-
 libavcodec/ccaption_dec.c                     |   19 +-
 libavcodec/codec_desc.c                       |   11 +
 libavcodec/codec_desc.h                       |    8 +
 libavcodec/decode.c                           |   60 +-
 libavcodec/dvbsubdec.c                        |   53 +-
 libavcodec/dvbsubenc.c                        |   96 +-
 libavcodec/dvdsubdec.c                        |    2 +-
 libavcodec/dvdsubenc.c                        |  102 +-
 libavcodec/encode.c                           |   61 +-
 libavcodec/internal.h                         |   16 +
 libavcodec/jacosubdec.c                       |    2 +-
 libavcodec/libaribb24.c                       |    2 +-
 libavcodec/libzvbi-teletextdec.c              |   14 +-
 libavcodec/microdvddec.c                      |    7 +-
 libavcodec/movtextdec.c                       |    3 +-
 libavcodec/movtextenc.c                       |  126 +-
 libavcodec/mpl2dec.c                          |    2 +-
 libavcodec/pgssubdec.c                        |    2 +-
 libavcodec/realtextdec.c                      |    2 +-
 libavcodec/samidec.c                          |    2 +-
 libavcodec/srtdec.c                           |    2 +-
 libavcodec/srtenc.c                           |  116 +-
 libavcodec/subviewerdec.c                     |    2 +-
 libavcodec/tests/avcodec.c                    |    2 -
 libavcodec/textdec.c                          |    4 +-
 libavcodec/ttmlenc.c                          |  114 +-
 libavcodec/utils.c                            |  184 +++
 libavcodec/version.h                          |    2 +-
 libavcodec/webvttdec.c                        |    2 +-
 libavcodec/webvttenc.c                        |  127 +-
 libavcodec/xsubdec.c                          |    2 +-
 libavcodec/xsubenc.c                          |   88 +-
 libavfilter/Makefile                          |   16 +
 libavfilter/allfilters.c                      |   14 +
 libavfilter/avfilter.c                        |   30 +-
 libavfilter/avfilter.h                        |   11 +
 libavfilter/avfiltergraph.c                   |    5 +
 libavfilter/buffersink.c                      |   54 +
 libavfilter/buffersink.h                      |    7 +
 libavfilter/buffersrc.c                       |   72 +
 libavfilter/buffersrc.h                       |    1 +
 libavfilter/formats.c                         |   22 +
 libavfilter/formats.h                         |    3 +
 libavfilter/internal.h                        |   19 +-
 libavfilter/sf_graphicsub2text.c              | 1132 +++++++++++++++
 libavfilter/sf_splitcc.c                      |  395 ++++++
 libavfilter/sf_stripstyles.c                  |  211 +++
 libavfilter/sf_subfeed.c                      |  366 +++++
 libavfilter/sf_subscale.c                     |  884 ++++++++++++
 libavfilter/sf_textmod.c                      |  710 ++++++++++
 libavfilter/subtitles.c                       |   63 +
 libavfilter/subtitles.h                       |   44 +
 libavfilter/vf_overlaygraphicsubs.c           |  765 ++++++++++
 libavfilter/vf_overlaytextsubs.c              |  678 +++++++++
 libavfilter/vf_subtitles.c                    |   56 +-
 libavutil/Makefile                            |    4 +
 {libavcodec => libavutil}/ass.c               |   91 +-
 libavutil/ass_internal.h                      |  135 ++
 {libavcodec => libavutil}/ass_split.c         |   37 +-
 .../ass_split_internal.h                      |   32 +-
 libavutil/frame.c                             |  211 ++-
 libavutil/frame.h                             |   85 +-
 libavutil/subfmt.c                            |   45 +
 libavutil/subfmt.h                            |  115 ++
 libavutil/version.h                           |    3 +-
 tests/ref/fate/.gitattributes                 |    3 +
 tests/ref/fate/filter-overlay-dvdsub-2397     |  182 +--
 tests/ref/fate/mov-mp4-ttml-dfxp              |    8 +-
 tests/ref/fate/mov-mp4-ttml-stpp              |    8 +-
 tests/ref/fate/sub-dvb                        |  162 ++-
 tests/ref/fate/sub-textenc                    |   10 +-
 tests/ref/fate/sub-ttmlenc                    |    8 +-
 tests/ref/fate/sub-webvttenc                  |   10 +-
 tests/ref/fate/sub2video                      | 1091 ++++++++++++++-
 tests/ref/fate/sub2video_basic                | 1239 +++++++++++++++--
 tests/ref/fate/sub2video_time_limited         |   78 +-
 91 files changed, 11076 insertions(+), 1391 deletions(-)
 create mode 100644 libavfilter/sf_graphicsub2text.c
 create mode 100644 libavfilter/sf_splitcc.c
 create mode 100644 libavfilter/sf_stripstyles.c
 create mode 100644 libavfilter/sf_subfeed.c
 create mode 100644 libavfilter/sf_subscale.c
 create mode 100644 libavfilter/sf_textmod.c
 create mode 100644 libavfilter/subtitles.c
 create mode 100644 libavfilter/subtitles.h
 create mode 100644 libavfilter/vf_overlaygraphicsubs.c
 create mode 100644 libavfilter/vf_overlaytextsubs.c
 rename {libavcodec => libavutil}/ass.c (65%)
 create mode 100644 libavutil/ass_internal.h
 rename {libavcodec => libavutil}/ass_split.c (93%)
 rename libavcodec/ass_split.h => libavutil/ass_split_internal.h (86%)
 create mode 100644 libavutil/subfmt.c
 create mode 100644 libavutil/subfmt.h
 create mode 100644 tests/ref/fate/.gitattributes

base-commit: c936c319bd54f097cc1d75b1ee1c407d53215d71

Submitted-As: https://master.gitmailbox.com/ffmpegdev/pull.18.v2.ffstaging.FFmpeg.1642646916.ffmpegagent@gmail.com
In-Reply-To: https://master.gitmailbox.com/ffmpegdev/pull.18.ffstaging.FFmpeg.1642122813.ffmpegagent@gmail.com