What are popular media-storing service application?

I am in a search for open source media server application, controllable by JSON API. I expect the following features:

1. Uploading and storing large audio files, auto-detecting media formats
2. Providing a key (e.g. a permanent link) to control the stored media
3. Retrieving the fragment of stored media given its start/stop time

The goal is to integrate such a service into a Web application. Could you suggest popular solutions in this area? The minimal software dependencies (python, PHP, etc) would be a bonus.