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Timo Rothenpieler 5c288a44ad avcodec/nvenc: add AV1 encoding support 
The encoder seems to be trading blows with hevc_nvenc.
In terms of quality at low bitrate cbr settings, it seems to
outperform it even. It produces fewer artifacts and the ones it
does produce are less jarring to my perception.

At higher bitrates I had a hard time finding differences between
the two encoders in terms of subjective visual quality.

Using the 'slow' preset, av1_nvenc outperformed hevc_nvenc in terms
of encoding speed by 75% to 100% while performing above tests.

Needless to say, it always massively outperformed h264_nvenc in terms
of quality for a given bitrate, while also being slightly faster.
2022-11-05 21:17:37 +01:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc avfilter: add backgroundkey video filter 2022-11-05 10:52:39 +01:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools ffmpeg: fix implementation of updated input start time 2022-11-03 14:38:42 +05:30
libavcodec avcodec/nvenc: add AV1 encoding support 2022-11-05 21:17:37 +01:00
libavdevice avdevice/avdevice: Fix mismatching argument name 2022-10-17 09:51:47 +02:00
libavfilter lavfi/vf_fieldmatch: keep fields as-is if not matched properly 2022-11-05 11:50:36 +01:00
libavformat avformat/replaygain: avoid undefined / negative abs 2022-11-04 22:44:16 +01:00
libavutil avutil/tests/cpu: print the avx512icl flag 2022-11-04 19:37:46 +01:00
libpostproc configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswresample swresample/rematrix: support mixing top front left/right channels 2022-11-03 19:39:52 -03:00
libswscale swscale/output: Bias 16bps output calculations to improve non overflowing range for GBRP16/GBRPF32 2022-11-04 22:44:16 +01:00
presets
tests checkasm: add a verbose check function for uint32_t data 2022-11-04 19:37:46 +01:00
tools tools/target_dec_fuzzer: Adjust threshold for FFV1 2022-10-20 21:42:21 +02:00
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.mailmap mailmap: stop git lying about who I commit things as 2022-11-04 19:37:46 +01:00
.travis.yml
Changelog avfilter: add backgroundkey video filter 2022-11-05 10:52:39 +01:00
configure avcodec/nvenc: add AV1 encoding support 2022-11-05 21:17:37 +01:00
CONTRIBUTING.md
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MAINTAINERS MAINTAINERS: remove the project leader section 2022-09-23 16:06:11 +02:00
Makefile configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
README.md
RELEASE

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.