How to enable Screen Content Coding ie Screen Content Mode (so Intra Block Copy and cool space savings) with SVT-AV1 in OBS. What params to put?

[JesusComethSoon]

I'm sorry, I'm very new with all this.
Just want smallest file sizes for my screen recordings, that comprise of mainly text.
AV1 with scm=1 allows for just that. Similar letters on black background, across the whole screen, are deduplicated so video file size is small.

How to enable that?
In output, encoder settings, FFmpeg options, i'm putting

svtav1-params=scm=1

Is this correct?
Whether I put this or not, file sizes seem to be unaffected...

 

[koala]

Make sure you don't use a bitrate based rate control but rather quality based such as CQP. The CQ value controls how much detail is removed from the source. 0=nothing (lossless=huge file), the higher the value the more detail is removed, resulting in a smaller file. With CQP, a video recording with just a still image is just as big as a few jpg of that image, regardless of the recording duration. Try to find a CQ value that meets your quality expectations.

If you use a bitrate based rate control such as CBR and VBR, the video will be inflated to the specified bitrate even if there were no changes within the frames, so don't do this.

Don't try to micromanage the encoder by adding custom parameters. The default parameters are already optimized and are the result of years of experience. If there were better parameters, they would already have been adopted as the default.

 

[JesusComethSoon]

Yeah, you're right. Default scm value is 2, which is "auto detect", which is good.

Yes, I started using CQP with CQ value of 28 and wow, it's not wasteful at all indeed (unlike CBR etc)!

(Sadly, youtube terminated my stream for copyrighted music... Sad... my channel is @BrianAudioBible btw... Maybe torrentz or IPFS is the best self-hosted distribution system for long-form video content, especially in the face of all the censorship and bias against Christian content and Christian advertizements (on google and tiktok; no bias against Christian ads on meta and twitter, apparently, but they have very short video duration limits). But yeah. AV1 is the future indeed, and it's already here. So glad.).