Hacker News Reader

What kind of video sources provide output via websockets to be proxied to RTMP? OBS and other streaming video tools usually support RTMP themselves and browsers only support WebRTC out of the box as far as I know. I'm curious what kind custom browser video streaming solution you're using on the client side.

View on HN

This appears to use the MediaStream Recording API (https://developer.mozilla.org/en-US/docs/Web/API/MediaStream...) to produce a WebM H.264 stream, which can be sent to the WebSocket. The server then transmuxes this to a FLV H.264 stream for RTMP output.

You get Nal h264 packets from MediaStream. Note MediaStream only supports h264 baseline on Chrome (you can request other profiles, but that's all you get). Not sure about FireFox.

https://en.wikipedia.org/wiki/Network_Abstraction_Layer

I think the inverse of this (RTMP to Websockets) would be more interesting.

Look up there :-)

https://news.ycombinator.com/item?id=22921564

There is no provision for decompressing raw encoded video frames outside of WebRTC. Yes you can use Media Extensions, but that requires boxing the video. There is also Broadway.js, but that is limited to h264 baseline.

Reply on news.ycombinator.com