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Gyan Doshi 882aac99d2 ffmpeg: add option -isync 
This is a per-file input option that adjusts an input's timestamps
with reference to another input, so that emitted packet timestamps
account for the difference between the start times of the two inputs.

Typical use case is to sync two or more live inputs such as from capture
devices. Both the target and reference input source timestamps should be
based on the same clock source.

If either input lacks starting timestamps, then no sync adjustment is made.
2022-07-14 15:48:24 +05:30
compat avfilter: add chromakey_cuda filter 2022-07-10 17:20:15 +02:00
doc ffmpeg: add option -isync 2022-07-14 15:48:24 +05:30
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools ffmpeg: add option -isync 2022-07-14 15:48:24 +05:30
libavcodec lavc/aarch64: Add pix_abs16_x2 neon implementation 2022-07-13 23:25:22 +03:00
libavdevice Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libavfilter Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libavformat Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libavutil Bump versions after 5.1 branch 2022-07-13 00:29:05 +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 Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
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tests fate/pcm: Add pcm_dvd transcode tests 2022-07-10 16:58:58 +02:00
tools tools/target_dec_fuzzer: adjust threshold for flic 2022-07-12 21:55:22 +02:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap mailmap: add entry for myself 2021-03-09 02:09:55 +00:00
.travis.yml Merge commit '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog Changelog: Add version <next> 2022-07-13 00:29:57 +02:00
configure configure: add missing deps for chromakey_cuda filter 2022-07-10 17:42:58 +02:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
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INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: add myself as maintainer for LoongArch. 2022-06-08 18:29:30 +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.