S-Video vs Composite Vs Broadcast

[thegig]

Riddle me this:
I can cap 704x480, no frameloss, CPU @ <75%, with a broadcast signal.
I can cap (S)VHS 704x480, no frameloss, without a SIMA, <27% CPU, composite
I can cap (S)VHS 704x480, no frameloss, with a SIMA, <27% CPU, composite
But when I cap (S)VHS (704x480) with S-Video, with or without a SIMA, my CPU rockets to 100% and frames drop like flies.

Why is this?

[Nelson37]

First, what type of capture card are you using?

Second, can you test with some other input besides the SVHS deck on the S-Video connector to see if it is VCR related or something else?

That is interesting, there shouldn't be any real difference.

[thegig]

I am using an AverTV Stereo(PVR). I'll try a DVD player and see if it makes a difference. I would think it wouldn't but who knows. I did notice I had some issues with my pc and had to reload the OS. So I'll see if that too makes a difference.

[energy80s]

Just out of curiosity ... what is a SIMA?

[Nelson37]

SIMA Copymaster, it removes some types of Macrovision from VCR tapes and can improve the signal, not sure if it is a true Time Base Corrector or not.

[SingSing]

Sima is mostly sold in US.

There is a de-macrovision box with both composite and S-video connection sold on US and UK's ebay, for $40. It should do the same things. I bought a de-macrovision box 7,8 years ago for $25.00, and it is still going. Sweet.

[thegig]

Well, it's not the card. One word ... clutter. Since my system crashed and I had to load the whole system, I tried again and it works fine. Kinda odd behaviour though. Thanks anyway.