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hensm / fx_cast

Chromecast Web Sender SDK implementation for Firefox
https://hensm.github.io/fx_cast/
MIT License
1.89k stars 64 forks source link

Use hardware accelerated FFmpeg to encode tab or screen #132

Open Torbins opened 4 years ago

Torbins commented 4 years ago

I have pretty powerful PC, but when I stream any Tab or Screen, I see very low quality video, and with low framerate. Please, use FFmpeg with hardware accelerated encoding to produce good quality video for streaming.

hensm commented 4 years ago

I've definitely considered this before and it's on the roadmap, though I can't say when I'll get to it (PRs welcome).

I'm not sure as to whether Firefox supports hardware-accelerated WebRTC (or if it uses OpenH264 everywhere), but the issue with the current screen sharing is on the Chromecast side. If I substitute for another PC or phone it's about as smooth as you'd expect from a WebRTC stream. It'd be nice if this were fixable, since I'd prefer not to reimplement display enumeration and selector UI for each platform if I can avoid it.

There's no reasonable means of capturing tabs (especially background tabs) at all, which is why the current implementation is so terrible.