We are using a Decklink Quad 2 to record and playback multiple videofeeds. All videofeeds are synced and the reference signal is also attached.
When recording, the hardware timestamp, aquired with IDeckLinkVideoInputFrame::GetHardwareReferenceTimestamp is still varying a little. Is there a general rule to be sure that frames are synchronous? Is it possible to start grabbing on different devices at the same hardwaretime?
At playback it is basically the same issue. We are using scheduled playback. Is it possible to schedule frames on different decklink devices at exactly the same hardwaretime?