I have two computers on the same network. One of them transmits a movie (H264) with RTP protocol. Is it possible to create a simple javascript app to receive this stream on the
It is possible to stream video uisng WebRTC, you can send only data parts with RTP protocol, on the other side you should use Media Source API to stream video.
Here is article with demo explained about Media Source API
May be this might help Janus-Gateway. This has listed RTP in Dependencies