On Wednesday, September 24, 2008 4:27:17 PM UTC+5:30, AtomicTom wrote:
Is there any way to recover footage recorded on digital 8mm video?
I recorded an entire 120 minute tape on a sony DCR-TRV520. I had even
reviewed the footage. Then 5 minutes into the tape it appears to
have been erased. I get a gray screen.

I personally would recommend you to use a video recovery software for recovering your lost videos. As there are various third party video recovery software available out there which you can use for recovering your lost video files easily and safely.
For more details visit : http://www.videorecoverysoftware.com