This is an example on how Quartz Composer compositions work inside Serato Video-SL. The velocity of the spinning record controls the Y-axis of the line and the crossfader controls the opacity of the line segments.
I wanted to try to do something like the Visual Scratch -project: jklabs.net/projects/visualscratch/ Sorry about the crappy scratching. I'm a bit rusty, because I didn't have turntables in Montreal so I couldn't practice for 9 months.
More information and the .qtz file:
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