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sunyuechi b3f7440298 lavc/hevc: R-V V put_pixels(pow2) 
k230               banana_f3
put_hevc_pel_pixels4_8_c:               61.6 ( 1.00x)    69.5 ( 1.00x)
put_hevc_pel_pixels4_8_rvv_i32:         24.6 ( 2.50x)    28.0 ( 2.48x)
put_hevc_pel_pixels8_8_c:              209.8 ( 1.00x)    215.5 ( 1.00x)
put_hevc_pel_pixels8_8_rvv_i32:         52.6 ( 3.99x)    38.2 ( 5.64x)
put_hevc_pel_pixels16_8_c:             839.4 ( 1.00x)    830.0 ( 1.00x)
put_hevc_pel_pixels16_8_rvv_i32:       126.6 ( 6.63x)    90.5 ( 9.17x)
put_hevc_pel_pixels32_8_c:            3246.6 ( 1.00x)    3246.7 ( 1.00x)
put_hevc_pel_pixels32_8_rvv_i32:       311.6 (10.42x)    257.0 (12.63x)
put_hevc_pel_pixels64_8_c:           12894.6 ( 1.00x)    12892.7 ( 1.00x)
put_hevc_pel_pixels64_8_rvv_i32:      1135.8 (11.35x)    778.0 (16.57x)
2024-12-17 09:21:20 +08:00
compat compat/w32pthreads: change pthread_t into pointer to malloced struct 2024-12-16 09:43:19 +01:00
doc lavc/packet: add API for an AVPacket-based AVContainerFifo 2024-12-15 14:05:33 +01:00
ffbuild
fftools fftools/sync_queue: switch from AVFifo+ObjPool to AVContainerFifo 2024-12-15 14:05:34 +01:00
libavcodec lavc/hevc: R-V V put_pixels(pow2) 2024-12-17 09:21:20 +08:00
libavdevice
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libavformat avformat/hevc: add support for writing alpha layer 2024-12-16 00:50:52 +01:00
libavutil lavc/container_fifo: move to lavu and make public 2024-12-15 14:05:15 +01:00
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Changelog avcodec/libx265: add alpha layer encoding support 2024-12-16 00:50:52 +01:00
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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.