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Philip Langdale 737298b4f7 lavc/vaapi_decode: add missing flag when picking best pixel format 
vaapi_decode_find_best_format currently does not set the
VA_SURFACE_ATTRIB_SETTABLE flag on the pixel format attribute that it
returns.

Without this flag, the attribute will be ignored by vaCreateSurfaces,
meaning that the driver's default logic for picking a pixel format will
kick in.

So far, this hasn't produced visible problems, but when trying to
decode 4:4:4 content, at least on Intel, the driver will pick the
444P planar format, even though the decoder can only return the AYUV
packed format.

The hwcontext_vaapi code that sets surface attributes when picking
formats does not have this bug.

Applications may use their own logic for finding the best format, and
so may not hit this bug. eg: mpv is unaffected.
2022-08-09 09:20:10 -07:00
compat avfilter: add chromakey_cuda filter 2022-07-10 17:20:15 +02:00
doc doc/filters: clarify behaviour of weights in amix 2022-08-09 13:59:29 +05:30
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools fftools/ffmpeg: move handling corrupt packets to the input thread 2022-08-08 16:20:58 +02:00
libavcodec lavc/vaapi_decode: add missing flag when picking best pixel format 2022-08-09 09:20:10 -07:00
libavdevice avdevice/v4l2: fix leak of timefilter 2022-08-03 17:52:25 +08:00
libavfilter lavfi/overlay_vaapi: set defalut alpha value as 1.0 2022-08-09 14:02:25 +08:00
libavformat avformat/movenc: Remove experimental status of flac-in-MP4 muxing 2022-08-08 16:19:38 +02:00
libavutil x86/tx_float: save a branch during coefficient deinterleaving 2022-08-09 03:35:12 +02:00
libpostproc Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libswresample Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libswscale swscale/output: fix reading chroma values when generating vuya output 2022-08-08 09:39:33 -03:00
presets
tests checkasm: Silence warnings about unused return value from read() 2022-08-08 23:39:13 +03:00
tools tools/target_dec_fuzzer: set avctx->workaround_bugs flags 2022-07-26 09:15:16 -03:00
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.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
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.travis.yml
Changelog avcodec: WBMP (Wireless Application Protocol Bitmap) image format 2022-08-07 19:18:18 +10:00
configure avcodec/flacdsp: Split encoder-only parts into a ctx of its own 2022-08-05 03:28:45 +02:00
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MAINTAINERS MAINTAINERS: Split project server admin list 2022-08-07 22:01:21 +02:00
Makefile Makefile: Prompt for reconfigure on lavc/hwaccels.h modification 2022-07-01 00:34:38 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
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.