iStopmotion doesn't accept my camera

A few days earlier I bought iStopmotion in the AppStore. But it doesn’t detect my Sony Handycam (HDR-CX250). I already downloaded a program (Final Cut Pro Trial Version) and the QTC-Codec for Pro Apps ( I can’t install him because my MacBook says that an earlier version allready exsists). Is there a way to let iStopmotion detect my cam?

Unfortunately this camera don’t provide a live video feed via USB so you can’t use it directly with iStopMotion via USB port. You will need a 3rd party HDMI capture device to get the HDMI signal from the camera into your Mac. You can use Blackmagic‘s UltraStudio Mini Recorder for example. Please have a look at the “Video Input” section of this page for more options: