Hi – can I just check I understand your problem?
In QC you have Video Input (Apple’s Video Input patch) -> Syphon Server
In the recorded output you only get one frame
– Do you see moving video or a frozen frame in the preview in Syphon Recorder (View > Show Preview if it is hidden)?
– I take it the Syphon Server is in Image mode, not Scene? What happens if you try Scene and connect the Video Input to a Billboard patch?