OBS uses the rav1e encoder for AV1 encoding. rav1e is an open-source encoder written in the Rust programming language developed by the Video Coding Experts Group (VCEG) in cooperation with the Alliance for Open Media (AOMedia), the consortium behind AV1. It is designed to be fast and efficient, making it suitable for real-time encoding tasks like those required by OBS for streaming and recording purposes.

#obs #rav1e #rust #AOMedia #av1 #encoder

FFmpeg librav1e is the Xiph encoder for AV1. Compile with --enable-librav1e. Rav1e claims to be the fastest software AV1 encoder, but that really depends on the setting.

AMD, or the Advanced Media Framework, provides developers with optimal access to AMD GPU for multimedia processing. AMD AMF AV1 Encoder is designed to meet the individual needs by ajusting the resolution, bit rate, frame rate, encoding quality, and more.

https://www.ffmpeg.org/ffmpeg-all.html#librav1e

#ffmpeg #av1 #librav1e #Rav1e #Xiph #amd #gpu

AV1 is an open source and royalty-free video codec developed by the ​Alliance for Open Media (AOMedia), a non-profit industry consortium. Depending on the use case, AV1 can achieve about 30% higher compression efficiency than VP9, and about 50% higher efficiency than H.264.

FFmpeg currently supports three AV1 encoders.
- libaom (libaom-av1)
- SVT-AV1 (libsvtav1)
- rav1e (librav1e)

#ffmpeg #video #av1 #libaom #SVT #libsvtav1 #rav1e #librav1e #encoder #AOMedia

FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more! It needs FFmpeg (version 4.3 or greater required, 5.0+ recommended) under the hood for the heavy lifting, and can work with a variety of encoders.

https://github.com/cdgriffith/FastFlix

#ffmpeg #fastflix #h264 #hevc #h265 #rav1e #aom #av1 #svt #vp9 #vvc #gif #webp #avif #hdr #hdr10 #hdr10plus #hlg #dolby_vision

According to xiph, rav1e is the fastest and safest AV1 encoder.

According to their GitHub page, "For the foreseeable future, a weekly pre-release of rav1e will be published every Tuesday."

https://github.com/xiph/rav1e#features

#xiph #rav1e

Yes, after a month of work, I finally managed to merge the #avif / #heif branch!

It has full color profile support and everything! This was an insane amount of work, especially research and I felt I was going mad at some points.

Krita's appimages and other binaries will be building libheif with #rav1e and #dav1d, which means that mere mortals will be able to save avif without needing a fancy computer at cost of a little quality.

https://mail.kde.org/pipermail/kimageshop/2021-March/016204.html

#krita #av1

Do you use the #AV1 codec for video and/or images compression and is it worth the slow encoding speeds?

#avif #rav1e #ffmpeg #mkv

#rav1e はABRなん（´・ω・） ｽｶﾈ?
3000kbpsでx264, x265とVMAFを用いて比較すると微妙（´・ω・） ｽﾅ
https://pao.moe/@nukosu/104180440813160043

#VMAF
#AVC #HEVC #AV1
#x264 #265 #rav1e

Spring - Blender Open Movieの25秒から720フレーム

# H.264
-c:v libx264 -b:v 500k -pass 1 -preset veryslow
-c:v libx264 -b:v 500k -pass 2 -preset veryslow

# H.265
-c:v libx265 -b:v 500k -x265-params 'asm=avx512:pass=1' -preset veryslow
-c:v libx265 -b:v 500k -x265-params 'asm=avx512:pass=2' -preset veryslow

# AV1
rav1e IN --tiles 16 --threads 18 -o OUT --first-pass A --bitrate 500 -s 0 && rav1e IN --tiles 16 --threads 18 -o OUT --second-pass A --bitrate 500 -s 0

#H.264 #H.265 #AV1 #x264 #265 #rav1e