Zooom gets much faster

This is an under the hood update but much needed since I released Zooom.

With the release of the Fable model, I thought it’d be interesting to ask it to look into performance improvements.

Zooom used to re-encode the whole video from scratch, just to attach audio. Not anymore, the export now copies the already-encoded video straight through instead. Also the Photo mode used to redraw the full-resolution photo into a fresh buffer every single time, 450 times. This made for a very slow processing. Now it draws it once and reuses that same buffer 450 times.

Lastly, the library grid used to refetch your whole zooom album every time you opened it or recorded something new. It now listens for changes instead, and thumbnails are cached rather than decoded fresh on every scroll.