Doom9's Forum - View Single Post - "white clip extension" in VHS HQ, what does it mean

raffriff42 · 20th August 2013, 01:52

VHS video is an FM signal. VHS has a defined sync level of 3.5 MHz and white level of 4.4 MHz. Colors whiter than white (for overshoot purposes) require a higher maximum frequency. I'm guessing as video tape improved, later VHS decks could record higher frequencies, allowing more overshoot. This would make the highlights a little less blown out - which is not actually "sharper." Maximum resolution is not affected, only white clipping.

20th August 2013, 01:52	#2 \| Link
raffriff42 Retried Guesser Join Date: Jun 2012 Posts: 1,373	VHS video is an FM signal. VHS has a defined sync level of 3.5 MHz and white level of 4.4 MHz. Colors whiter than white (for overshoot purposes) require a higher maximum frequency. I'm guessing as video tape improved, later VHS decks could record higher frequencies, allowing more overshoot. This would make the highlights a little less blown out - which is not actually "sharper." Maximum resolution is not affected, only white clipping. Last edited by raffriff42; 20th August 2013 at 02:54.