Today I started to make an animation , but i have a problem with the timeline , i put some .mov files in it (MOV duration time : 10 seconds) and my composition have 15 seconds.And here is the problem : When te animation hits 10 seconds the MOV files disappears and the remaining of 5 seconds is blank. PLEASE Help ME!!
Sorry for my english!
If you only have 10 seconds of content in a 15-second composition, then you need to either add more content or shorten your composition.
You can shorten the composition by changing the duration in the composition settings.
Since you're obviously very new to After Effects, I very strongly recommend that you start here to learn After Effects.