AV1 re-encoding without quality loss

The AV1 video codec yields better-looking and smaller videos compared to H265, the incumbent in the domain of video on the Internet. I wanted to re-encode my video collection in AV1 to save storage space but without losing quality in the process. Turns out it isn't simple and I'm exploring solutions.

#Updates

#Re-encoding videos in AV1 without quality loss

Last update: 2024-11-07

I'm trying to find out how to re-encode videos with AV1 to save storage without reducing quality, even in places where AV1 and SVT-AV1 usually have troubles. There are a few corner cases which make things more difficult and I'll try to solve them.

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#Reports

#Notes

#2025-10

Size predictions based on preset, CRF and the size for another CRF and (faster) preset.

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