hi jason,
there are 2 ways…
one way, select the footage in the project window and choose file>interpret footage>main… at the bottom of that window you can set the number of loops. when you drag that footage into a comp it should now loop that number of times.
another way, select the footage in the timeline and choose layer>time>enable time remapping. add an expression for the time remapping property (animation>add expression) and type: loopOut(), you may need to extend the out-point of the layer for as long as you need it. but now the footage will loop indefinitely.
i prefer the later way for looping. it allows for tweaking of the loop… say the last frame is actaully a duplicate of the first frame, and you don’t want that little hitch, just add a time remap keyframe one frame in from the last keyframe and delete the last keyframe. you have now trimmed that last duplicate keyframe out.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW