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Gyan Doshi cbbc927a67 ffmpeg: add per-stream input option drop_changed 
This is a replacement in ffmpeg for the deprecated avcodec flag AV_CODEC_FLAG_DROPCHANGED.

This option is meant to be used when the filtergraph should not be
reinited upon input parameter changes as that leads to loss of state
in the filtergraph potentially leading to broken or aborted output,
e.g. inserting of silence with first_pts specified in aresample.

Generally useful to avoid corrupted yet decodable packets in live
streaming inputs.

This option when enabled takes precedence over reinit_filters
2025-03-24 16:18:17 +05:30
compat compat/w32pthreads: change pthread_t into pointer to malloced struct 2024-12-16 09:43:19 +01:00
doc ffmpeg: add per-stream input option drop_changed 2025-03-24 16:18:17 +05:30
ffbuild ffbuild: use response files only if ar accepts them 2025-03-18 15:35:30 +05:30
fftools ffmpeg: add per-stream input option drop_changed 2025-03-24 16:18:17 +05:30
libavcodec avcodec/libuavs3d: pixel format should be native endian 2025-03-24 14:54:46 +08:00
libavdevice avdevice/sdl2: Suppress macro redefinition warning 2025-03-21 04:30:09 +01:00
libavfilter avfilter/scale: remove duplicate block 2025-03-24 16:17:13 +05:30
libavformat avformat/mov: generalize sgpd_sync index lookup 2025-03-24 14:53:41 +08:00
libavutil avutil/libm: Only include intfloat.h when needed 2025-03-22 03:35:28 +01:00
libpostproc */version.h: bump after release/7.1 branch 2024-09-24 17:10:35 +02:00
libswresample aarch64: Fix a few misindented lines 2025-02-28 23:23:09 +02:00
libswscale swscale/x86/rgb2rgb: optimize AVX2 version of uyvytoyuv422 2025-03-23 15:25:48 +00:00
presets
tests tests/checkasm/videodsp: Don't use declare_func_emms 2025-03-22 03:45:03 +01:00
tools tools: Add binaries to .gitignore 2025-02-25 02:03:58 +01:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore ffbuild: read library linker objects from a file 2025-03-17 15:45:53 +05:30
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog avcodec: add a ffv1 parser 2025-02-06 13:48:47 -03:00
configure configure: Add EXR decoder->bswapdsp dependency 2025-03-23 14:14:43 +01:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md INSTALL: explain the circular dependency issue and solution 2024-11-03 19:35:23 +01:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: add Manuel Lauss as sanm.c/smush.c Maintainer 2025-03-17 15:33:36 +01:00
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.