This one may sound crazy at first, but hear me out...
I purchased an inexpensive 720p/60hz HDMI-to-IPTV adapter that can be configured for unicast or multicast/RTP mode. I plan to create a custom M3U and attach a TiVo cable card dvr to the adapter. And Boom! Channels now can receive the TiVo video output. This will be most interesting when traveling and away from home, and there are probably other cool use cases here that others can think of outside of a TiVo box.
Problem: How to send the IR codes? This control can be achieved while at home by using the TiVo app, but that won't work over WAN. I haven't yet done much research yet into possible solutions, but with all of the great minds here I am sure that there is something fairly simple and inexpensive available. I'll go do my homework now and reply as I come up with ideas. Thanks all for the assist in the mean time.
Edit 1: I just realized that utilizing the network remote protocols would likely be preferred for a TiVo device instead of an IR repeater. Will start to investigate this for a bit...