"someone knowing what is going wrong?"
While we know what is going wrong I doubt that is why you are posting. You want a fix. I've been in the WinCap discussion a few times so rather than repeat this again the usuals are:
1. Do not rely on Microsoft to find and install the machine's motherboard drivers. YOU DO THAT!
2. Research (google?) WINCAP "WINDOWS 7" prior discussions.
Bob
I've been transferring analog videos from VHS to DVD for years with pinnacle Studio 12 under XP with no problems at all. Right now, having W7 there are no way to make it possible with this capture device. Once installed the EasyCap device, the device manager tells me the driver is properly working (driver STK 1150)but now, no video editing program can "feel" it. It is there physically, but it does not exist.
Is outsdide there someone knowing what is going wrong?

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