3D Compositing with Action > Action: Basics > Accessing the Action Module >

# Loading from a Multitrack Clip with Selfkey or Self Gaps

When you load from a multitrack clip with Selfkey or Self Gaps, the tracks from the selected multitrack clip are loaded from the bottom track to the top track. The last track is the background or back clip and subsequent tracks are loaded as front clips for each media. The matte of each media is generated from the front clip. This means that the last track is loaded as the common back clip, the second to last track is loaded as the front clip of media 1, the third to last track is loaded as the front clip of media 2, and so on.

(a) Front and generated matte for media 1(b) Front and generated matte for media 2(c) Front and generated matte for media 3(d) Front and generated matte for media 4(e) Back clip

Gaps located at the start and end of a track are treated in two ways depending on which multitrack option you select. If you select MultiTrack, each gap is filled with its preceding non-gap frame. If you select MultiTrack with Gap, each gap is filled with black frames.