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sunyuechi afb967b81e af_afir: RISC-V V fcmul_add 
Segmented loads are slow, so here we use unit-strided load and narrowing shifts.

c910:
fcmul_add_c: 2179
fcmul_add_rvv_f64: 1652

c908:
fcmul_add_c: 4891.2
fcmul_add_rvv_f64: 2399.5

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
2023-11-16 20:53:18 +02:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc fftools/ffplay: add hwaccel decoding support 2023-11-15 01:20:11 +08:00
ffbuild ffbuild: Add gzip -n flag to fix reproducible builds 2023-11-05 11:30:13 +01:00
fftools fftools/ffplay: add hwaccel decoding support 2023-11-15 01:20:11 +08:00
libavcodec lavc/llauddsp: R-V V scalarproduct_and_madd_int32 2023-11-16 16:53:44 +02:00
libavdevice avdevice/android_camera: fix build failure due to typo 2023-11-07 11:10:07 +08:00
libavfilter af_afir: RISC-V V fcmul_add 2023-11-16 20:53:18 +02:00
libavformat lavf/mux: do not apply max_interleave_delta to subtitles 2023-11-14 18:18:26 +01:00
libavutil lavu/log: do not assume AVClass.item_name is always set 2023-11-09 11:25:17 +01:00
libpostproc Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswresample Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswscale sws/rgb2rgb: fix unaligned accesses in R-V V YUYV to I422p 2023-11-13 18:34:29 +02:00
presets
tests checkasm: add lossless audio DSP 2023-11-16 16:53:44 +02:00
tools tools/general_assembly.pl - add options to print names, emails or both 2023-11-14 18:33:07 +01:00
.gitattributes
.gitignore
.mailmap mailmap: remap my email accounts 2023-11-03 20:57:49 +08:00
.travis.yml
Changelog avcodec: LEAD MCMP decoder 2023-11-08 17:37:58 +11:00
configure avcodec/cbs_vp8: Add support for VP8 codec bitstream 2023-11-15 10:29:03 -05:00
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
LICENSE.md
MAINTAINERS MAINTAINERS: add myself as a mediacodec and videotoolbox maintainer 2023-11-08 16:15:04 +08:00
Makefile tools: Don't include the direct library names when linking 2023-10-02 22:49:07 +03:00
README.md
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.