This isn't causing any real problems, but I would just be curious as to why this occurs.

Capturing using an ADVC-50 connected to a JVC 7965 (SCART converter to Composite phono) ; the preview screens using DVapp or Edit Studio, the audio lags behind the video. This didn't used to happen with my older Panasonic VCR.

The resulting captured file playback is perfectly in Sync though.