‘M8 Trace’ Quartz Composer effect
Following up on a thread on the Vidvox user forums, this effect recreates the ‘trace’ look from Modul8. It’s Image Filter compliant, so it should work in all programs that support Quartz Composer Image Filters.
It uses a Core Image kernel originally written by Memo Akten to apply a luma key.
Controls for trail length, luma key threshold and luma key softness.