FFmpeg 4.1 Brings AV1 Parser & Support For AV1 In MP4

[phoronix]

Phoronix: FFmpeg 4.1 Brings AV1 Parser & Support For AV1 In MP4

The crew responsible for the FFmpeg audio/video library today released version 4.1 of this open-source project...

http://www.phoronix.com/scan.php?page=news_item&px=FFmpeg-4.1-Released

[SpyroRyder]

What about within MKV files?

[birdie]

What about within MKV files?

According to FFMpeg docs this must be supported out of the box: https://trac.ffmpeg.org/wiki/Encode/AV1

[Brisse]

Matroska should work fine. Tested it myself. What I'm more curious about is when is it going to accept -threads -tile-columns and -frame-parallel parameters because so far I've been stuck to encoding in a single thread and it's so slow it's barely useable even for testing purposes. An hour of encoding yields just a few seconds of 1080p video on my Ryzen 1700X. I don't expect assembly optimization or anything just yet, but the patch for making these parameters work is trivial.

[birdie]

Matroska should work fine. Tested it myself. What I'm more curious about is when is it going to accept -threads -tile-columns and -frame-parallel parameters because so far I've been stuck to encoding in a single thread and it's so slow it's barely useable even for testing purposes. An hour of encoding yields just a few seconds of 1080p video on my Ryzen 1700X. I don't expect assembly optimization or anything just yet, but the patch for making these parameters work is trivial.

Welcome to https://forum.doom9.org/showthread.php?t=172550

[M@yeulC]

Welcome to https://forum.doom9.org/showthread.php?t=172550

What a gigantic thread!

Couldn't work be split across keyframes? Parse the video once to determine where to insert those, and make each thread work from one keyframe. That could provide interesting speed gains, for relatively little added complexity, at no compression efficiency cost (unlike columns, unless I am missing something).

I would also really be excited if they were to introduce support for some Scalable Video Coding scheme: PeerTube could really use something like this!