5
3

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 5 years have passed since last update.

AV1のエンコーダ librav1e の2019年12月の状態

Last updated at Posted at 2019-12-23

AV1のエンコーダ librav1e について調べたのでメモを残す。

ffmpegのgitリポジトリのmasterブランチで rav1e を検索

$ git grep rav1e origin/master
origin/master:Changelog:- AV1 encoding support via librav1e
origin/master:configure:  --enable-librav1e        enable AV1 encoding via rav1e [no]
origin/master:configure:    librav1e
origin/master:configure:librav1e_encoder_deps="librav1e"
origin/master:configure:librav1e_encoder_select="extract_extradata_bsf"
origin/master:configure:enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
origin/master:doc/encoders.texi:@section librav1e
origin/master:doc/encoders.texi:rav1e AV1 encoder wrapper.
origin/master:doc/encoders.texi:Requires the presence of the rav1e headers and library during configuration.
origin/master:doc/encoders.texi:You need to explicitly configure the build with @code{--enable-librav1e}.
origin/master:doc/encoders.texi:@item rav1e-params
origin/master:doc/encoders.texi:Set rav1e options using a list of @var{key}=@var{value} pairs separated
origin/master:doc/encoders.texi:by ":". See @command{rav1e --help} for a list of options.
origin/master:doc/encoders.texi:For example to specify librav1e encoding options with @option{-rav1e-params}:
origin/master:doc/encoders.texi:ffmpeg -i input -c:v librav1e -b:v 500K -rav1e-params speed=5:low_latency=true output.mp4

Rav1e Achieves Another ~20% Speed-Up For Rust-Based AV1 Video Encoding
https://www.phoronix.com/scan.php?page=news_item&px=Rav1e-20-Percent-Faster

おまけ

Intel のAV1エンコーダ SVT-AV1 をffmpegで使えるようにするパッチ。
https://github.com/OpenVisualCloud/SVT-AV1/tree/master/ffmpeg_plugin

関連

新しいビデオコーデックのAV1を使って無理やり HLSでストリーミングしてみた

5
3
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
5
3

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?