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FFmpeg git repo
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Anton Khirnov ca67a783ab lavfi/graphparser: improve applying graph-level sws options 
The current code will apply them if the options string does not contain
a 'flags' substring, and will do so by appending the graph-level option
string to the filter option string (with the standard ':' separator).
This is flawed in at least the following ways:
- naive substring matching without actually parsing the options string
  may lead to false positives (e.g. flags are specified by shorthand)
  and false negatives (e.g. the 'flags' substring is not actually the
  option name)
- graph-level sws options are not limited to flags, but may set
  arbitrary sws options

This commit simply applies the graph-level options with
av_set_options_string() and lets them be overridden as desired by the
user-specified filter options (if any). This is also shorter and avoids
extra string handling.
2023-01-10 11:52:02 +01:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc doc/ffmpeg: improve -r documentation 2023-01-10 11:49:28 +01:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools fftools/ffmpeg: always generate CFR output when -r is used 2023-01-10 11:49:28 +01:00
libavcodec lavc/decode: validate frames output by decoders 2023-01-10 11:47:29 +01:00
libavdevice avdevice/avfoundation: convert to new channel layout-API 2022-11-08 14:08:05 -03:00
libavfilter lavfi/graphparser: improve applying graph-level sws options 2023-01-10 11:52:02 +01:00
libavformat avformat: Rename IPFS to IPFS gateway 2023-01-09 12:14:47 -05:00
libavutil avutil/tx_template: Use more unsigned ints to avoid undefined overflows 2022-12-25 19:33:24 +01:00
libpostproc postproc/postprocess_template: Fix alignment 2022-11-09 17:39:00 +01:00
libswresample swresample/swresample_frame: fix regression in detecting changes 2023-01-04 18:19:07 +01:00
libswscale swscale/utils: Fix indentation 2022-11-24 21:02:57 +01:00
presets
tests fftools/ffmpeg: always generate CFR output when -r is used 2023-01-10 11:49:28 +01:00
tools tools/target_dec_fuzzer: Adjust threshold for RSCC 2022-12-01 21:43:57 +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 avformat: Rename IPFS to IPFS gateway 2023-01-09 12:14:47 -05:00
configure avformat: Rename IPFS to IPFS gateway 2023-01-09 12:14:47 -05:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: add myself as amfenc* maintainer 2022-11-10 16:28:07 +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.