Try Subsonic. It's a media streaming platform with an HTTP frontend, and can do arbitrary transcoding of arbitrary files on the fly depending on network speed.

Try Subsonic. It's a media streaming platform with an HTTP frontend, and can do arbitrary transcoding of arbitrary files on the fly depending on network speed. Did I mention that it has a free version which is perfectly usable, and probably has most of the features you want (IIRC, it's $10 a month for your own subdomain and support for the app, but you also download MadSonic, which has the features, but not the domain).