Tools combining cursors with stroke lines (LinkedCursors, CursorWithTrail) often utilize masked clip functionality. Masked clip prevents connecting stroke from showing through the cursor graphics.
Masked clip is a .gtc clip containing additional aux alpha channel that specifies where the underlying graphics should be suppressed.
To create a clip containing the mask channel, specify a mask image (image sequence) as a Warp File Name at the Clip Convertor Source File page. Additionally, check the Subtract Aux Alpha checkbox at the Output Video Parameters page.
Following mask file types are supported:
RGBA, IA | Image alpha channel is used as a mask. |
Grayscale | Pixel intensity is used as a mask value (white – fully masked, black – no mask). |
RGB | Image is converted to grayscale, pixel intensity is used as a mask. |
Example: to create masked clip shown above, following inputs were used:
RGBA image:
Mask grayscale image: