ffmpeg-compare VS ab-av1

Netflix’s vmaf AI based comparison engine is in ffmpeg now by default I think. You can take some snippets of your video and run some compressions and compare them to the original to see how they compare. I threw together a script a few years ago to automate that process a bit https://github.com/Torpus/ffmpeg-compare It’s pretty old so not sure it still works but could give you some ideas on how to implement something similar.

Use vmaf to compare some sample conversions and see what works best for you size and quality wise. I put together a simple script that does this a while back you could probably repurpose or use if it still works. https://github.com/Torpus/ffmpeg-compare

Calculate vmaf before you encode the whole file. -> https://github.com/alexheretic/ab-av1 has a search mode with samples, the estimation of time and filesize is very good and does everything in one step

ab-av1 auto-encode with a VMAF quality target of 97-98 + a script for the deletion of files sounds like what you need.

ab-av1

My case is ab-av1, a cli for encoding videos. The local db stores cached vmaf analysis.

If the goal is space saving and a consistent visual quality rather than just having a library as AV1 for its own sake, I'd use ab-av1. Not sure how (or if) it'll handle the Opus audio channels cases, but bugs can be filed.

Try this https://github.com/alexheretic/ab-av1

Use this tool and you will get excellent results https://github.com/alexheretic/ab-av1 calculates and converts automatically calculates the vmaf and crf properly

Check this, might help you optimize the process.