Problem with brightness during capturing

[Knuffen]

Hello,

I'm capturing some VHS tapes using a Panasonic NV-FS200 connected via S-video to a PDI Deluxe capture card in the computer. The brightness seems to automatically adjust itself in some scenes during playback and capturing (details in bright areas are lost). One can see that a scene looks good at the beginning, then brightness starts to increase, up to a certain point. Sometimes it's too bright from the beginning (compared to watching it on the TV or using a TBC). It happens on every tape I have tried, and it's not a Macrovision error since I'm using home recorded tapes. The gradual increase of the brightness disappears if I use a TBC, but instead some scenes which were fine before becomes to bright during the whole scene.

I have tried different players, cables and capture software, but nothing helps. I don't know if this could be a problem with the capture card or something else. Any help would be appreciated!

[themaster1]

That's strange .

Assuming that when you watch this vhs on your tv there is no brightness problem, i think i can safely say your capture card might have some troubles.

I don't know this card "pdi deluxe" but like the name say it's "deluxe" so i don't see why it would do that.

Did you buy this card as 2nd hand" ?

[edDV]

Probably the capture card AGC (Auto Gain Control) is faulty. Better cards allow manual gain adjustment.

Analog video to 8 bits is a force fit and getting black level and white gain (contrast) correct is the key to a quality capture.

[Knuffen]

Did you buy this card as 2nd hand" ?

No, I bought it from this site: http://www.pixelmagicsystems.com/products/pdi/pdi_deluxe.htm

Probably the capture card AGC (Auto Gain Control) is faulty. Better cards allow manual gain adjustment.

I have read on other forums that it is a very good capture card, maybe it's something wrong with just mine? And how do you make these manual adjustments, does it depend on the card?

[edDV]

Did you buy this card as 2nd hand" ?

No, I bought it from this site: http://www.pixelmagicsystems.com/products/pdi/pdi_deluxe.htm

Probably the capture card AGC (Auto Gain Control) is faulty. Better cards allow manual gain adjustment.

I have read on other forums that it is a very good capture card, maybe it's something wrong with just mine? And how do you make these manual adjustments, does it depend on the card?

Try connecting a known good S-Video source like a cable/sat tuner and see if the card functions properly.

[Knuffen]

It doesn't seem to matter what kind of video source I connect to the card.

[edDV]

It doesn't seem to matter what kind of video source I connect to the card.

The card may be faulty.
Try to uninstall/reinstall all drivers or install it in a different machine to be sure.