On many forum and sites people say that you can capture with resolution of 720x576. But many other replies is too high resolution and is better to capture at 512x384 or similar. Someone know what is the max original resolution of a vhs?
I think you want to capture at 640x480. VHS uses interlaced video, so the recorded content provides half the lines every 1/30th of a second. The effective resolution is horribly low, 352x240.
Have a look at VHS capture DIVX information, which seems to discuss all the issues.
Regardless of the workflow you use, be sure your de-interlacer is high-quality or the output will suffer greatly.