Can Macrovision be defeated by copying via the aerial inputs

[eranakis]

Can Macrovision be defeated by copying via the aerial inputs/outputs?

[Poppa_Meth]

you mean a coaxial connection? if so then yes. you'll get crappy picture quality but coax can't carry the macrovision signal correctly.

[barrybear]

No It cannot be coppied as the signal is just modulated on to a carrier rather than direct line in.

Barrybear

[rhegedus]

No.

[duhmez]

Coax carries the macrovision just fine.

Macrovision can kiss my buttock cleavage.

[kpkilburn]

From the Macrovision FAQ...

4.3) Can Macrovision be defeated by copying via the aerial inputs/outputs?

and

4.4) Can it be defeated by routing the signal throgh a TV with video inputs/outputs?

No, it can't. There were some ancient methods that could be eliminated with some of the above methods, but they are now long dead. Macrovision is so integrated in the video signal that these simple tricks will not work.

Entire FAQ at http://www.repairfaq.org/filipg/LINK/F_MacroVision1.html#MACROVISION_010

Macrovision (at least one form of it) resides in the vertical blanking interval as "noise" (pulses that interfere with the automatic gain circuit in VHS VCRs and hardware designed to detect and act upon it). That doesn't just disappear because it goes through the air.

[Prot]

A long time ago I had a VCR that had adjustable gain control, and I believe I could even disable it. It was a high end Mitsubishi that also was HI-FI. Sadly, it no longer works, but this was a machine to record on if Macrovision was a problem.

[barrybear]

The early forms of macrovision used to place a pulse on the video signal at about line 17and 18 this pulse would very in amplitude from a full white signal two a blacklevel signal causing the video cassette recorder to wind its electronic gain control up and down to compansate for what it thought was a strong and week signal. The recognised way at the time to set automatic gain control was to look at this area of the signal. TVs playing back a signal did not see this.

Some video recorders did not use this methode of AGC ane were blind to the signal. the way to defeat it is to clamp the signal at these lines so that the pulses remain at black level.

Barrybear

[handyguy]

Some vcrs are immune to macrovision. You'd have to try yours.

[spiderman2k1]

There are more then one way to do this. I would not get a Sima BOX to make copies to DVD to VHS I had one both died out that box was $100.00 dollars I have the other box from Sima for $50.00 dollars good for VHS to VHS or DVD to the PC card's might work with DVD to DVD recorded do not know do not have a DVD recorder.

If you have a Creative Encore and RealMagic Hollywood and other card's use this program http://www.remoteselector.com/ also this is the same person that made www.dvd2one.com also I have use this is I think it's the best way to get DVD to VHS with out any problem's.

The other way to do it if you have a DVD burner in your PC make a back up of the movie then use DVD2ONE or CLONEDVD these are the only two program's that I know that will keep the closed caption CC subtitle's. You can still use any of the other program but will not have close caption subtitle's . Put the Back up DVD in your DVD player and hook it up to your VCR and click record. If youhave to make more then one VHS back up and you have different title's use a DVD-+RW

[kpkilburn]

Interesting reading regarding the two types of analog Macrovision copy-protection schemes -- AGC and Colorstripe...

http://wwwiti.cs.uni-magdeburg.de/iti_amsl/symsec/docs/DVD_Copy_Protection.pdf

[tweedledee]

I connected my dvd to my winfast 2000 card via video/audio leads and there was no sign of macrovision.

[kpkilburn]

I'm not familiar with that type of card. Remember that the analog Macrovision (AGC and Colorstripe) work on VHS VCRs to prevent copying. They are not specifically designed to operate on capture cards since they do not contain AGC circuits like VHS VCRs do (not sure how colorstripe would affect them though).

Some cards actually contain code that detects Macrovision and replicates the effect. So, it's not the Macrovision itself that's causing the problems, but rather it's the card that's detecting the code and acting upon it. Same end result, but different methods to achieve it.

There's really no reason a DVD player must have Macrovision on it. The Macrovision signal is injected AFTER the digital data is encoded (unlike a VHS tape where it's encoded in the analog signal). There's a bit set on the DVD that says "encode the output with Macrovision". A DVD manufacturer that doesn't want to "play by the rules" could simply omit the circuitry that encodes the Macrovision signal. Likewise, they could also omit the region coding detection. Of course, there may be legal issues with that, but technically it's possible to bypass all of that.