Output remaining clip time to display

@TheYouth yes, that is designed to use a secondary casparcg channel to output a copy of the video with a timecode overlay.
I had a suspicion I had already used it with 2.2, and managed to find that code so I have pushed a new build which should work with 2.2 and 2.3 now too. https://github.com/GuildTV/ccg-bitc/releases/tag/v0.3.0