- Posts: 9
- Joined: Wed Aug 03, 2022 8:39 pm
- Real Name: Alastair Thorne
On the ATEM Television Studio HD all of the video inputs must exactly match the resolution and frame rate that the switcher is set to use. So if the switcher video standard is 1080p2997, then any SDI video inputs must also be 1080p2997.
So the issue here would be the HDMI output from the computer into the HDMI to SDI converter. For example, if the computer outputs 1080p30 over HDMI, the converter will convert that to 1080p30 over SDI and then the switcher won't recognize it as it is not 1080p2997. Note that I believe the HDMI inputs on the switcher are a bit more tolerant of integer vs. fractional frame rates, which is why the switcher might accept a 1080p 30Hz signal over HDMI, but not over SDI.
Some people have success using a utility like SwitchResX to try to force the computer to output a particular resolution and refresh rate. If that doesn't work another option is to use a HDMI/SDI scaler and frame rate converter such as a Mini Converter UpDownCross HD or Decimator MD-HX. With those types of converters, you can take whatever video signal the computer ends up outputting and convert it to the exact signal format that the video switcher expects.