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FFmpeg git repo
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Haihao Xiang fa3da243e6 hwcontext_vaapi: remove duplicate formats from sw_format list 
hwcontext_vaapi maps different VA fourcc to the same pix_fmt for U/V
plane swap cases, however duplicate formats are not expected in sw_format
list when merging formats.

For example:
ffmpeg -loglevel debug -init_hw_device vaapi -filter_hw_device vaapi0 \
-f lavfi -i smptebars -vf \
"hwupload=derive_device=vaapi,scale_vaapi,hwdownload,format=yuv420p" \
-vframes 1 -f null -

Without this fix, an auto scaler is required for the above command
   Duplicate formats in ff_merge_formats detected
   [auto_scaler_0 @ 0x560df58f4550] Setting 'flags' to value 'bicubic'
   [auto_scaler_0 @ 0x560df58f4550] w:iw h:ih flags:'bicubic' interl:0
   [Parsed_hwupload_0 @ 0x560df58f0ec0] auto-inserting filter
   'auto_scaler_0' between the filter 'graph 0 input from stream 0:0' and
   the filter 'Parsed_hwupload_0'

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
2020-07-27 16:06:30 +01:00
compat compat/cuda/ptx2c: remove shell loop; fix BSD sed compat 2020-06-01 22:10:41 -05:00
doc libavcodec/libaomenc.c: Add command-line options for inter-coding tools 2020-07-24 19:10:10 -07:00
ffbuild ffbuild: Refine MIPS handling 2020-07-23 16:30:02 +02:00
fftools ffprobe: Allow unknown format private AVOptions 2020-07-02 19:24:56 +01:00
libavcodec libavcodec/libaomenc.c: Add command-line options for inter-coding tools 2020-07-24 19:10:10 -07:00
libavdevice avdevice/decklink_dec: export timecode with s12m side data 2020-07-15 05:47:14 +08:00
libavfilter avfilter/vf_xfade: add hblur transition 2020-07-21 23:29:55 +02:00
libavformat avformat/ape: Error out in case of EOF in the header 2020-07-26 18:29:57 +02:00
libavresample
libavutil hwcontext_vaapi: remove duplicate formats from sw_format list 2020-07-27 16:06:30 +01:00
libpostproc Bump minor versions after branching 4.3 2020-06-08 22:49:04 +02:00
libswresample Bump minor versions after branching 4.3 2020-06-08 22:49:04 +02:00
libswscale swscale/yuv2rgb: cosmetics 2020-07-25 10:20:42 +08:00
presets
tests libavutil: Detect MMI and MSA flags for MIPS 2020-07-23 17:21:58 +02:00
tools dnn_backend_native_layer_mathunary: add atanh support 2020-07-06 12:45:14 +08:00
.gitattributes
.gitignore
.mailmap mailmap: add entry for myself 2020-07-13 11:24:04 +08:00
.travis.yml
Changelog avformat: add apm muxer 2020-07-21 11:36:14 +10:00
configure ffbuild: Refine MIPS handling 2020-07-23 16:30:02 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
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CREDITS
INSTALL.md
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MAINTAINERS MAINTAINERS: add myself and gpg fingerprint 2020-07-17 21:57:18 +02:00
Makefile
README.md
RELEASE RELEASE: We are after the 4.3 branch point, update for that 2020-06-10 00:20:24 +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 a mean to alter decoded Audio and Video through chain of 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.