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Old 08-13-2018, 10:48 AM
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Quote:
Originally Posted by colectorad View Post
The tearing at the top of the screen suggests that the back tension wasn't properly adjusted.
Note the quick flickering back and forth, along with the slow periodic change as the tape reel rotates. This indicates two things:
1) the video capture card used did not have a fast horizontal sync, as was designed into TVs after the introduction of home VCRs
2) the slow variation one direction and the other indicates that the average tension was correct, but when the H timing after the head switch was periodically off by a significant part of a line, the capture card had too slow a H response to pull it in quickly in the first few lines, as a TV set would.

A capture card with a good frame synchronizer would have fixed this.
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