Cant do stereo camera calibration

Hey guys, I am getting this error when trying to run a stereo camera calibration.
LogMetaHumanCalibrationGenerator: Error: Not enough valid frames detected to run calibration (Minimum is 3)
If I open the 2 different Img media sources, they both have 2:28 of footage and will play when I hit the Open button.
I really dont see any other options or things I can do to debug or change.
Anyone know whats going on?