Use ffmpeg to scan for errors:
"Adobe Premiere Pro could not open the file. File format is not supported or the file is damaged. (Error Code: 39)" adobe premiere pro error code 39
ffmpeg -v error -i problemfile.mp4 -f null - Use ffmpeg to scan for errors: "Adobe Premiere
Overfilled or corrupted cache files slowing down the process. adobe premiere pro error code 39
Hold Alt (Windows) or Option (macOS) while launching Premiere Pro. When prompted, click Clear to reset preferences. Note: This resets custom workspaces, shortcuts, and settings.