- Posts: 11
- Joined: Tue Dec 04, 2012 10:16 pm
In general, the output will be generated with reference to the internal clock or the reference input (if available and compatible with the output video mode).
The video input does not have an impact on video output timing, and input and output may use different video rates (e.g. it is possible to capture 1080p29.97 while outputting 1080p25).
The output will be generated with reference to the internal clock on the device.1. What happens when an app is generating an output stream without any input signal present (in his input pair of duplex mode device) and without reference signal in the ref in connector?
The output will be generated with reference to the internal clock on the device. The presence of an input signal will not change the output timing [1].2. What happens when an app is generating an output stream with an input signal present (in his input pair of duplex mode device) and without reference signal in the ref in connector?
The output will be generated with reference to the reference input (genlock) assuming the reference input is compatible with the active video output mode.3. What happens when an app is generating an output stream with an input signal present (in his input pair of duplex mode device) and with reference signal in the ref in connector? (this is easy to answer!)
Hope that helps,
-nick
[1] Output video timing will be related to the video input when performing an Internal Keying operation.