I am using three PTZoptics NDI cameras to record our worship service. When I run tests to calculate the delay in the video verses audio, it runs between 250-350ms, so I put a 300ms delay in my OBS audio feeds to sync the video and audio. This works fine for ~14mins of recording & streaming the service. Then all of a sudden there will be a little glitch in the video and then the video delay jumps from ~300ms to ~900ms and stays that way for the rest of the service. The indicators at the bottom left of OBS show the CPU running about 20-30% and no dropped frames. The video is not glitchy or stuttering at all the whole time. It is just like something switches and it adds 600ms of consistent video delay. Here is a link to our latest recording and you can see it happen at ~13:55 into the recording (https://vimeo.com/648295015). I have my NDI sources set to "source sync." Should I be using "Network sync?" I am no sure what the difference is. I just can't figure out why is suddenly changes the baseline video delay??? Any ideas would be appreciated.
Changing Video Delay?
- Thread starter dabercro
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