Anyone know how this works.

[Guest]

I just purchased a DV cam from sony. In the manual it shows what each of the indicator symbols mean. They had one for"unable to record-copy protected material" or something like that.

I am assuming this is to prevent people from recording movies in theaters.
How does this work? I assume by an embedded signal in the movie.

[Tommyknocker]

I think it means if you try to input a signal from a commercial DVD it will display the symbol. I know some DVD recorders can do it as well.

[DVD_Ripper]

I think more so associated with the "Line In Jacks" on the unit.. maybe if you plug in a DVD via those jacks it would recognize the copy protection and plop up that icon

[Guest]

I though I heard somewhere that there was somesort of signal in the movie and Sony was the first(as usual) company to install this on their cams.

[flaninacupboard]

They're experimenting with this type of copy protection both on sound and picture, but a DV cam is way too cheap a device to feature it

Far more likely it picks up macro, or dvd players with DV-out put some kind of flag in the stream.

[Guest]

Makes sense

[Guest]

They're experimenting with this type of copy protection both on sound and picture, but a DV cam is way too cheap a device to feature it

Far more likely it picks up macro, or dvd players with DV-out put some kind of flag in the stream.

Thats why I thought they were developing it. To prevent the copying of first run moive(and subsequent bootlegging) by camcorders

[flaninacupboard]

but a device with a resolution of 720x480 can't pick up any "invisible" fingerprint from a cinema screen. for it to register on even -one- pixel it'd be a huge artifact. add in the fact those cam jobs are never held still for long and i see no way it'd ever work. a repeating pattern would be hosed because of the movement, a subtle watermark would pass the cam by, and any kind of super-speedy imagery would be visible to the eye or too quick for a DV cam to notice. now, a bluetooth transmitter in the cinema which told any camera not to record a thing, that would work. you'd have to wrap your cam in lead, but i don't think you'd get a good picture like that