5 ms·

Where is it slow? I'm assuming libav/libffmpeg stuff - or maybe just in IO cause videos are fat.

• dceddia 3y ago
  That's one place for sure, yeah. Video decoding is just resource intensive, especially if it's being done in software. Switching to hardware decoding is a big thing that's still on my todo list. Beyond that, drawing the timeline efficiently took some work. I spent a bunch of time rewriting it to use WebGL recently, and before that it was some 2D canvas stuff. Plain old DOM elements slow to a crawl when there's 10k+ of them :D Another little wrinkle is that calling between JS and Rust has a fair bit of overhead, so I try to minimize that and avoid sending lots of data back and forth. I think Tauri v2 is supposed to improve that a lot, but right now it's basically serializing everything to JSON and back. There's an alternative where you can send raw binary back and forth, and I'm using that in some spots. (re: the sibling comment about browser compatibility, I've got some fallbacks in place because old Safari didn't support it, heh)