Video on Demand for Movistar
The IPTV video streams used by Movistar come in two types: regular channels (Multicast/UDP) and video on demand (Unicast/UDP). In this post I describe what needs to be done on the Linux router for Movistar to make “Video on Demand” work. They use the RTSP protocol which requires our router to support Full Cone NAT. The set-top boxes request videos via RTSP from their control server, but the video is sent from a different server with an unknown IP, so if we do nothing the video traffic will be dropped. Let’s see how to solve this. …