AV1

Optional format

Off by default — enable it in Module Manager if you need it.

The newest royalty-free codec, meaningfully better compression than H.265 at equivalent quality. Supported by all major browsers and streaming platforms, but a much newer codec — check your target platform actually supports AV1 playback before relying on it.

Quality

High, Balanced (default), Fast — trades encode speed and file size against quality, same idea as the other quality dials.

No alpha support.