I've only ever had a Chromecast Ultra which doesn't let you use video while it's in ambient mode, but thinking of getting the Chromecast with Google TV. All I have found is ways to do it on Android TV from sources prior to Chromecast with Google TV but not sure if they're still relevant.

Does anyone know if it's pretty much done the same way as in the past or is there anything different about Chromecast with Google TV that wouldn't allow this, such as not being able to use videos as a screensaver like the older Chromecasts?