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Niklas Haas bc9696bff8 swscale/graph: make noop loop more robust 
The current loop only works if the input and output have the same number
of planes. However, with the new scaling logic, we can also optimize into a
noop the case where the input has extra unneeded planes.

For the memcpy fallback to work in these cases we have to instead check if
the *output* pointer is set, rather than the input pointer.
2025-05-18 14:37:33 +02:00
compat compat/cuda: add device side printf function 2025-05-14 22:08:33 +02:00
doc Revert "fftools/graphprint: Now, make it a Killer-Feature!" 2025-05-16 10:37:29 +02:00
ffbuild fftools/resources: Add resource manager files with build-time compression 2025-05-15 23:08:05 +02:00
fftools fftools/textformat: correctly propagate uninit error codes 2025-05-16 20:43:58 +02:00
libavcodec avcodec/libzvbi-teletextdec: change new lines to \n in ASS header 2025-05-17 21:27:29 +02:00
libavdevice avfoundation: Fix compilation for OSes other than macOS and iOS 2025-04-04 17:12:33 +03:00
libavfilter avfilter/avfilter: Add avfilter_link_get_hw_frames_ctx() 2025-05-15 23:04:44 +02:00
libavformat avformat/matroskadec: check that channels fit in signed 32bit int 2025-05-15 03:03:57 +02:00
libavutil Remove libpostproc 2025-05-07 15:35:47 +02:00
libswresample libs: bump major version for all libraries 2025-03-28 14:44:34 -03:00
libswscale swscale/graph: make noop loop more robust 2025-05-18 14:37:33 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests tests/fate/probe: add test for dts in wav 2025-05-16 20:43:58 +02:00
tools tools/merge-all-source-plugins: Check that there are no uncommited changes 2025-05-15 16:19:59 +02:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore ffmpeg/repo: Add dot-folders in the repository root to .gitignore 2025-04-19 17:29:12 +02:00
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog Changelog: VVC supports all content of SCC 2025-05-17 09:24:01 +08:00
configure fftools/resources: Add resource manager files with build-time compression 2025-05-15 23:08:05 +02:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2 Rename COPYING.GPL --> COPYING.GPLv2 and COPYING.LGPL --> COPYING.LGPLv2.1. 2009-06-05 09:51:31 +00:00
COPYING.GPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md Add tools/merge-all-source-plugins 2025-05-15 12:17:04 +02:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS MAINTAINERS: Add entry for samples-request 2025-05-15 03:03:54 +02:00
Makefile configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +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.