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Wenbin Chen 0a0847dbac libavcodec/qsvdec: using suggested num to set init_pool_size The init_pool_size is set to be 64 and it is too many. Use IOSurfQuery to get NumFrameSuggest which is the suggested number of frame that needed to be allocated when initializing the decoder. Considering that the hevc_qsv encoder uses the most frame buffer, async is 4 (default) and max_b_frames is 8 (default) and decoder may followed by VPP, use NumFrameSuggest + 16 to set init_pool_size. Signed-off-by: Wenbin Chen <wenbin.chen@intel.com> Signed-off-by: Guangxin Xu <guangxin.xu@intel.com>		2022-04-06 17:12:26 +08:00
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doc	libavcodec/qsvenc: enable LowDelayBRC and MaxFrameSizeI/MaxFrameSizeP for more accurate bitrate control	2022-04-06 17:12:26 +08:00
ffbuild	…
fftools	fftools/opt_cmdutils: fix printing known channel layouts	2022-03-25 08:42:45 -03:00
libavcodec	libavcodec/qsvdec: using suggested num to set init_pool_size	2022-04-06 17:12:26 +08:00
libavdevice	avdevice/dshow: fix regression	2022-03-29 23:25:33 +02:00
libavfilter	avfilter/vsrc_gradients: add spiral type	2022-04-05 17:38:16 +02:00
libavformat	avformat/mpegenc: Fix ever growing FIFO and infinite loop on error	2022-04-05 21:52:11 +02:00
libavutil	libavutil/hwcontext_vaapi: Re-enable support for libva v1	2022-04-06 17:12:26 +08:00
libpostproc	Keep including the full version.h when headers are included externally	2022-03-19 00:01:57 +02:00
libswresample	swresample/rematrix: fix typo in clean_layout()	2022-03-28 00:07:42 -03:00
libswscale	Keep including the full version.h when headers are included externally	2022-03-19 00:01:57 +02:00
presets	…
tests	tests: use a filtergraph script for fate-mov-channel-description	2022-04-05 21:25:26 -03:00
tools	avcodec/codec_internal: Add FFCodec, hide internal part of AVCodec	2022-03-21 01:33:09 +01:00
.gitattributes	…
.gitignore	gitignore: add config_components.h	2022-03-17 18:35:41 -03:00
.mailmap	…
.travis.yml	…
CONTRIBUTING.md	…
COPYING.GPLv2	…
COPYING.GPLv3	…
COPYING.LGPLv2.1	…
COPYING.LGPLv3	…
CREDITS	…
Changelog	lavfilter: Add SITI filter	2022-04-01 20:27:43 +02:00
INSTALL.md	…
LICENSE.md	…
MAINTAINERS	MAINTAINERS: add myself as maintainer for libsrt protocol	2022-04-01 09:21:50 +08:00
Makefile	Makefile: check config_components.h when comparing timestamps in component list files	2022-03-17 18:35:41 -03:00
README.md	…
RELEASE	…
configure	avcodec/bsf: Add FFBitStreamFilter, hide internals of BSFs	2022-03-23 23:45:45 +01:00

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.