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Leo Izen c0de7ac520
avcodec/libjxlenc: support negative linesizes 
libjxl doesn't support negative strides, but JPEG XL has an orientation
flag inside the codestream. We can use this to work around the library
limitation, by taking the absolute value of the negative row stride,
sending the image up-side-down, and telling the library that the image
has a vertical-flip orientation.

Signed-off-by: Leo Izen <leo.izen@gmail.com>
2024-02-05 12:28:02 -05:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc avcodec: add ambient viewing environment packet side data. 2024-02-04 13:36:21 -03:00
ffbuild riscv: test for assembler support 2023-12-08 17:21:09 +02:00
fftools fftools/ffmpeg_mux: fix terminating muxer on streamcopy with -t 2024-02-05 11:55:12 +01:00
libavcodec avcodec/libjxlenc: support negative linesizes 2024-02-05 12:28:02 -05:00
libavdevice lavd: deprecate the bktr device 2024-02-02 15:40:35 +01:00
libavfilter avfilter/vf_tiltandshift: check outlink->color_range 2024-02-05 15:20:48 +01:00
libavformat avformat/flvenc: fix stereo flag when writing PCMA/PCMU 2024-02-04 20:28:47 +01:00
libavutil avutil/thread: fix pthread_setname_np parameters for NetBSD and Apple 2024-02-05 09:42:30 +01:00
libpostproc Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswresample swr/swresample: avoid reapplication of firstpts 2023-12-18 15:47:04 +05:30
libswscale riscv: test for assembler support 2023-12-08 17:21:09 +02:00
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tests tests/fate/ffmpeg: add a test for the issue fixed in previous commit 2024-02-05 11:55:12 +01:00
tools tools/target_dec_fuzzer: Adjust threshold for QPEG 2023-12-29 01:15:41 +01:00
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Changelog lavc/bsf: add a showinfo filter 2024-02-02 15:41:54 +01:00
configure avutil/thread: add support for setting thread name on *bsd and solaris 2024-02-04 20:45:10 +01:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
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CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
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: remove myself from here 2024-02-04 22:22:42 +01:00
Makefile configure: Add a --disable-version-tracking option 2023-12-21 11:00:34 +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.