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Rémi Denis-Courmont 96a83ceea4 riscv: fix scalar product initialisation VSETVLI xd, x0, ...' has rather nonobvious semantics: - If xd is x0, then it preserves the current vector length. - If xd is not x0, it sets the vector length to the supported maximum. Also somewhat confusingly, while VMV.X.S always does its thing regardless of the selected vector length, VMV.S.X does _nothing_ if the selected vector length is zero. So the current code breaks fails to initialise the accumulator if we are unlucky to have a selected vector length of zero on entry. Fix it by forcing the vector length to one.		2022-10-13 10:17:38 +02:00
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doc	avutil/pixfmt.h: add native-endian RGB32F and RGBA32F formats	2022-10-11 16:31:15 -03:00
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libavcodec	riscv: fix scalar product initialisation	2022-10-13 10:17:38 +02:00
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libavfilter	avfilter/af_aspectralstats: allow to select subset of measurements	2022-10-11 18:14:06 +02:00
libavformat	avformat/mp3dec: remove a call to avio_tell()	2022-10-08 22:56:30 +08:00
libavutil	riscv: fix scalar product initialisation	2022-10-13 10:17:38 +02:00
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tests	checkasm/idctdsp: Use declare_func_emms only when needed	2022-10-11 14:18:54 +02:00
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configure	avcodec/snow: Move initializing MotionEstContext to snowenc.c	2022-10-12 10:58:15 +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.