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Old 6th October 2014, 16:47   #3  |  Link
SpOeK!
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Join Date: Sep 2014
Location: Spain
Posts: 6
My VCR is not a S-VHS but why I'm getting a nice picture using S-Video without any noise or interferences in the TV but not in the PC. That would discard a bad cable (TV image is OK).

I'm using a SCART to S-Video cable (like this) to connect the VCR to the PC but when I'm testing the VCR with the TV I need to add a converter (like this) from S-Video to SCART (no S-Video input in my TV). So here's my theory:

According to Wikipedia, the S-Video Y pin is shared with the Composite pin while the S-Video C uses a different pin and is not shared with the Composite (picture OK). So my guess is that the TV is unaware that the input is S-Video and is running in, let's say, Composite mode. The PC is pretty aware that the input is (should be) S-Video and is trying to use the two signals but S-Video C pin is carrying garbage (is a regular VHS not a S-VHS).

Does it make sense?
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