.mp4 is best. Later versions will support more video formats but I think that for the moment we are stuck there. I need to look into what github.com/mafintosh and github.com/feross are using. The basic tech on that site is called webtorrent. If there is a video being viewed by 500 people, the server doesn't need much bandwidth at all. Instead, the users serve the video to one another.
.mp4 is best. Later versions will support more video formats but I think that for the moment we are stuck there. I need to look into what github.com/mafintosh and github.com/feross are using. The basic tech on that site is called webtorrent. If there is a video being viewed by 500 people, the server doesn't need much bandwidth at all. Instead, the users serve the video to one another.
I think the size limit is on your hard drive if I had to guess.