I am in the process of shooting many days worth of time lapse pics with my GoPro. My dilemma is finding the easiest software to create the actual time lapse video from these pictures (apprx. 500 pics/video). I have iMovie (an old version? it seems I can't download the newest because I'm still on Sierra!!!) but I can't seem to figure the dumb program out. I have Filmora, but the catch with that is it seems I have to adjust the time duration of each clip individually! What is my best bet? Also, free or very cheap is preferable. Thanks!