I’m cross-posting this from the black magic forum, and it’s related to my other thread about mimoLive and outputting key/fill on a decklink duo. In that thread I’m trying to get SDI playout working on the decklink because of the problem I’m going to describe in this thread.
I have a TV Studio HD receiving input from mimoLive running on a Macbook Pro. MimoLive outputs fill and key signals on SDI A and B out on an Ultrastudio HD Mini into two of the SDI input channels on the TVS. I have Upstream Key 1 (on TVS) set to Luma with Fill set to the SDI A signal and Key set to the SDI B signal from the Mac.
Setting the Upstream key to ONAIR works as expected - graphics output from mimoLive is superimposed over the image from the current active camera (on Program output).
My problem is that after a period of time (sometimes as little as 5 minutes, sometimes as long as 20 minutes) the Fill/Key signal on the TVS freezes/stops working. If a lower third is active when this happens, for example, the lower third remains on screen. If no graphics are active, trying to play something like a lower third doesn’t appear at all on the TVS.
To recover, I have to restart mimoLive on the Mac. (Note: graphics do not freeze in mimoLive, they continue behaving as normal in the preview window etc).
Initially I thought this might be a frame rate issue, but I have the identical frame rate set on all components - TVS is set to 1080p59.94, as is the mimoLive document, the SDI playout configuration in mimoLive and the output on the Ultrastudio HD Mini.
I’m at a bit of a loss as to how to troubleshoot this. I’m currently trying to get the decklink duo working for SDI playout to see if the problem also occurs with that hardware device, but other than that I’m stumped. I have posted a thread on the Black Magic forums to see if other graphics engines like CasparCG have exhibited this behaviour. Any ideas for troubleshooting or fixing would be appreciated.