iMovie 10 clips freeze then jumps to the next clip quickly
I need help with iMovie. I have been working on a video for almost 2 months now and everything has been working fine. I’ve finally done and ready to finalize but I have been having issues with some of clips not transitioning smoothly. The clips and transitions seems to be freezing. The music continues but doesn’t transition smoothly. There’s a bit of a lag. I started to save the file but I had to stop it in the middle of it. I’m wondering if that could have something to do with the issue I’m having now. Maybe some of the clips are corrupted, the video has been working fine until I did that.
Can someone help me. Why are some of the clips lagging and freezing?
MacBook Pro 13", macOS 10.13