I'm in the process of adding this feature to a video mixer. I'm working with loops and speed control, so timing the crossfade depends on the sketch's frameRate and is never exact. If you were limited to normal speed videos and your computer could run the sketch at your video frame rate, it would just be a matter of subtracting the amount of time you want the fade to last from the duration of the clip and using this to trigger the next clip playing. Then you should be able to easily synch audio (my sketch is visuals only).
↧