[Kymmy]

You might find that the com port isn;t used for the ezcap, but instead it's a control line for the camera controls...that way the editing/capture program can control play/stop/..etc.. If you plug the ezcap device into a com port (via a usb/serial) it simply will not capture as it won't have the bandwidth... Is there perhaps another cable you;re missing for that plugs from the com port to the camera??