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0f407cdea2
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Haihao Xiang 0f407cdea2 avfilter: add QSV variants of the stack filters 
Include hstack_qsv, vstack_qsv and xstack_qsv. They may accept input
streams with different sizes.

Examples:
$ ffmpeg -hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-filter_complex "[0:v][0:v]hstack_qsv" -f null -

$ ffmpeg \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-filter_complex "[0:v][1:v][2:v][3:v]xstack_qsv=inputs=4:fill=0x000000:layout=0_0_1920x1080|w0_0_1920x1080|0_h0_1920x1080|w0_h0_1920x1080" \
-f null -

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
2023-02-16 11:15:50 +08:00
compat compat: Use '-' instead of '/' for rc.exe options 2023-02-13 13:49:40 +02:00
doc avfilter: add QSV variants of the stack filters 2023-02-16 11:15:50 +08:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools avutil/frame: deprecate AVFrame.coded_picture_number and display_picture_number 2023-02-13 00:37:50 +01:00
libavcodec avcodec/libx265: fix else clause when zeroing reordered_opaque 2023-02-16 00:52:30 +01:00
libavdevice Bump major versions of all libraries 2023-02-09 15:35:14 +01:00
libavfilter avfilter: add QSV variants of the stack filters 2023-02-16 11:15:50 +08:00
libavformat avformat: deprecate AVFormatContext io_close callback 2023-02-16 01:18:45 +01:00
libavutil avutil/frame: deprecate AVFrame.coded_picture_number and display_picture_number 2023-02-13 00:37:50 +01:00
libpostproc Bump major versions of all libraries 2023-02-09 15:35:14 +01:00
libswresample x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
libswscale Bump major versions of all libraries 2023-02-09 15:35:14 +01:00
presets
tests avformat/movenc: allow writing out channel count in MP4 and 3GP 2023-02-14 21:10:42 +02:00
tools avcodec: add AVCodecContext.frame_num as 64 bit variant to frame_number 2023-02-13 00:36:46 +01:00
.gitattributes
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap mailmap: stop git lying about who I commit things as 2022-11-04 19:37:46 +01:00
.travis.yml
Changelog avfilter: add QSV variants of the stack filters 2023-02-16 11:15:50 +08:00
configure avfilter: add QSV variants of the stack filters 2023-02-16 11:15:50 +08:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: add maintainer for the imf demuxer 2023-02-13 18:41:22 +01:00
Makefile configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
README.md
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +02:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.