@mbrett I just installed Kodi using Linux instructions outside RetroPie, and IPTV Simple dl'd fine.

it works!
I just want to say this works now. I can finally record how I play on this thing, which just refused to work before. I installed the newest firmware and tried it again. But since April (we have December now) a lot of things changed since then. If the above posting is a bit confusing, here is a brief explanation. I just have to switch a single HDMI output to be able to record.

The PVR Rocket is a portable device to record from any HDMI source up to 1080p30 or 720p60 to a usb drive. I usually use my RetroPie system with my old crt pc monitor at 640x480p. It is connected with a HDMI to VGA converter and all boot and emulator settings are optimized for that. The recordings are saved at 640x480p at 60 fps.

Recording: The HDMI output from Raspberry Pi is connected to the input at PVR Rocket. Then the PVR Rocket have also an 0 delay pass through HDMI output, which is connected to my final monitor. A single button press starts the recording and a second press stops it whenever I want. Playing without recording: The HDMI output from Raspberry Pi is connected to a VGA splitter. That VGA output is connected to my final crt pc monitor. To get sound, the VGA splitter will output 3,5mm audio jack.

mysetup.jpg

You can install one or multiple PVRs like explained on the RetroPie wiki, but you have to restart Kodi after install for them to appear in "My addons". Then you can go there and enable the one you want, only one can be enable at one time. Then configure that one in their respective settings. More info here:
https://kodi.wiki/view/PVR

@jmebd That kind of questions, it is better for you to ask them in the kodi oficial forum, or another forums more dedicated to that kind of subject. I have a PVR backend configured + some clients but I am no expert in this, it is a very simple setup and I don't use it much. My provider transmits the channels in h264, I never had stuttering problems or whatsoever, even on RPI 1. And this is a retrogaming forum, surely you will find better support for your doubts in more appropriate places.