@ venajan , For removing the Macrovision protection you need a video stabilizer .
This is on the video of a commercial VHS tape. You connect the video out cable on the VHS player to the video in of the DVD recorder through a video stabilizer .
I can only comment on the video stabilizer I have . It is a Dimax Grex .
It has worked well on every tape I have used it with. So it is not "iffy".
It is also a bit expensive . I have never used one but I have seen posted that the Sima also works well.
The Grex has other functions also. I haven't needed it but it is supposed to remove broadcast flags . If these ever become a nuisance I will run the output from my satellite box through the Grex.
On the negative side the best resolution from a SVHS player is 400 lines horizontal
A standard VHS player is 240 to 250 lines horizontal .
So unless this is the only way to get the video to a DVD . Out of production for example. The quality will be less than what a standard DVD would have.