MPEG Transport stream over IP?

I've made that by myself easily. I've actually made an IP streamer with two ASI streams streamed to different IPs or ports.

You should pack up to 7 MPEG-TS packets together, put UDP header, put IP and MAC headers -> move it to the TSE core and that's it. You also will need a small round-robin scheduler if you want to handle the incoming packets by LwIP and Nios.

All of this fitted to Cyclone III, both streams worked at 200Mbps, so 400Mbps over Gbit link overall.