En http://swpat.ffii.org/pikta/txt/ep/1290/880/
"Another common problem with video recorder record timing is due to the
video recorder clock being incorrectly set by the user, or due to it
losing its time as a result of, for example, a power interruption.
Many channels broadcast timing data packets in one of the vertical
blanking interval (VBI) of their TV picture to help alleviate both
types of problem. These packets contain time sensitive labels that,
among other things, identify the beginning and end points of a
broadcast TV program broadcast. This type of packet is widely
broadcast in Europe according to the public PDC and VPS broadcast specifications and many video recorders are adapted to receive and recognise these signals."

En http://www.vanns.com/shop/servlet/item/features/497499652
"Random Assemble Editing
The output connections on this camcorder also make it a simple matter to connect to a VCR (or other video components) for dubbing or editing your videos. Once connected, you can take advantage of your camcorder's Random Assemble Editing to organize and edit your video footage. Using the included remote control, select up to 8 "cuts" by using the In/Out button to mark the beginning and end of the scene you want to select. Place the scenes on your editing list in the order you want them to appear on the edited copy and when you're ready to proceed, press start and your camcorder performs the edits while your VCR faithfully dubs the edited scenes as commanded by your camcorder's remote. The remote controls most brands of VCR, or the VCR can be operated manually. *** You even have the power to adjust the record timing of your VCR to synchronize it with your camcorder*** and the ability to do audio dubbing right inside the camcorder!"

Un saludo.