Slow Video Framerate in osxVideoRecorderExample


I’m running the osxVideoRecorderExample from the example folder on OSX 10.9. The QuickTime movies I get are running with a framerate around 12-15fps, no chance to increase the value. I did a setDesiredFrameRate(50); of the vidRecorder, also the project is running with around 60fps. If I try to set the desired framerate of the grabber, he throws a “setDesiredFrameRate(): cannot set framerate for QTKitGrabber”. Any ideas?

Update: The iSight now works (out of the sudden) with 30fps. My Logitech HD Pro Webcam C920 still operates at 10fps – while other application can use the camera to record with more frames. Maybe a driver issue?