Re: Video Decoder
Web cam are low resolution 320x256 pixels, and no more than 10 images per second and they get digital signals directly, so speed to get it is not big.
Video signals are PAL or NTSC signals, they are analog signals with a carrier of 3.58 Mhz, so if you want to connect a parallel port to a video signal, you must connect an ADC and have more than 7.2Mhz of samples per second, and more than 8 bits!!!!!, it's not possible to do in this way in a parallel port. You must demodulate and digitalize the NTSC or PAL signal and store in a buffer, then maybe you can transfer to the PC via parallel or USB port.
Anyway good luck too