- Posts: 7
- Joined: Tue Mar 28, 2023 3:17 pm
- Real Name: Ed Ouellette
Hi Ed,
If you are referring to delay from Input signal to output, the internal keying occurs directly onto the incoming signal in hardware, so consider this delay to be sub-microsecond.
If you are referring to delay from key frame to output, I recommend measuring timestamps between IDeckLinkOutput::ScheduleVideoFrame and the IDeckLinkVideoOutputCallback::ScheduledFrameCompleted callback. You may want to refer to the InputLoopThrough SDK sample for reference on how to measure the output latency.
Regards
Cameron