Live streaming to a disk Not sure if this is the right place to ask this question (pretty technical), but I thought I'd start here.

I'm interested in building a website that will have a streaming-video feature. It's not quite live video, because the videos will only be available after they have been reviewed. However, I would like the videos to be viewable on demand (ie, I don't want there to be a waiting period for them to be uploaded and encoded, like Youtube). 

Basically, I'm wondering how to live-stream video directly to a server, so that it is being encoded on the fly, and can be watched as soon as the stream ends.

Thanks for your help!
If you’re up for building your own server, and have some coding skill, then you could look at setting up a nginx server running the RTMP extension that can capture an re-stream live or on demand video. It can also do near realtime transcoding or "at completion of capture" transcoding using ffmpeg.

For the system I setup, I send live video in using an IP based camera system from multiple sources that can do RTMP streaming, or if I want to capture desktop content like a video game I use OBS to do the streaming to the server.

The actually user website itself runs from a node.js based system that has access to the content recorded by the nginx rtmp capture.

OR

You could look at a pre-build solution like Kaltura which has both a open-source community version and a commercial version. Think of it as your own YouTube server setup that has a tone of features ready to go out-of-the-box.