Kdenlive/Manual/Effects/Misc/Sobel Sobel This is the Frei0r sobel MLT Filter. Sobel filter is an edge detection filter. ← Misc ↑ Back to menu ↑ Category: Kdenlive This page was last edited on 24 February 2013, at 16:30. Content is available under Creative Commons License SA 4.0 unless otherwise noted.