Sorry about the delay in response, I'm having to address this issue in between stuff at work and home. The raw video is two takes of about 40 min long, and the finished project will be about 10 min. It was taken on a Samsung S23 phone. Hmmm, now that I pull up the details of the video, I see "HEVC" listed. I thought I shot it without compression. Could it be that simple? Just reshoot without HEVC? If so, that's doable, though I wish there was some way to convert back to an uncompressed file.