Allow for an endless stream

[torch2424]

After tons of googling. No good way to do this / not possible.

FFMPEG has no real input switching. And will instantly end if an input file, or input URL (was thinking of a udp approach) ends.

Found a promising solution below, which may be worth playing with.

https://stackoverflow.com/questions/42737129/change-ffmpeg-input-on-the-fly

[torch2424]

Though if we wrote our own video overlay, we could possibly do soemthing like:

https://stackoverflow.com/questions/18618191/ffmpeg-merge-multiple-rtmp-stream-inputs-to-a-single-rtmp-output https://stackoverflow.com/questions/11453082/how-to-generate-a-2hour-long-blank-video