On some videos (not all, can't figure out the reason), the trimmer seems to work correctly on my phone. Then I connect it to my Windows PC and copy it over. At that point, the file size is the original size before trimming. The video actually stops (QuickTime) at the correct point, but there's a coda on the file which is just a still of the last frame. But it plays like video until the original end point. I have a video limit for uploading to another site, and I can't figure out how to edit around this problem. TIA