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Rémi Denis-Courmont 4e0e872881 lavc/h264dsp: R-V V high-depth h264_idct_add 
T-Head C908 (cycles):
h264_idct4_add_9bpp_c:        248.2
h264_idct4_add_9bpp_rvv_i32:  128.7
h264_idct4_add_10bpp_c:       256.7
h264_idct4_add_10bpp_rvv_i32: 128.7
h264_idct4_add_12bpp_c:       252.5
h264_idct4_add_12bpp_rvv_i32: 129.7
h264_idct4_add_14bpp_c:       258.0
h264_idct4_add_14bpp_rvv_i32: 129.7
2024-07-14 11:39:35 +03:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc doc/examples/mux: remove nop 2024-07-12 16:40:51 +02:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
fftools fftools/ffmpeg_mux_init: default to input timebase for streamcopy 2024-07-09 11:14:08 +02:00
libavcodec lavc/h264dsp: R-V V high-depth h264_idct_add 2024-07-14 11:39:35 +03:00
libavdevice avdevice/v4l2: add limited support for multiplanar API 2024-07-04 11:09:53 +02:00
libavfilter avfilter/vf_tiltandshift: Free dst on error 2024-07-12 21:58:50 +02:00
libavformat avformat/dvdvideodec: Fix incorrect padding cell trim logic 2024-07-13 17:17:36 +02:00
libavutil avutil/imgutils: av_image_check_size2() ensure width and height fit in 32bit 2024-07-12 22:16:05 +02:00
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Changelog Changelog: mention cropping support in Matroska and MP4 2024-07-11 21:35:40 -03:00
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CONTRIBUTING.md
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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 d3d12va_encode maintainer 2024-07-10 18:10:08 +02:00
Makefile riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
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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.