If you're uploading this to a professional platform (like a webinar or work portal), ensure there are in the filename (e.g., keep it as g61029.mp4 rather than g 610 29!.mp4 ) to avoid upload errors.
Use the Canon MP4 Join Tool for Windows or macOS. It’s designed specifically to merge split files without losing quality. g61029.mp4
If the file is corrupted, you might need a repair tool like Fix.Video or Handbrake to re-encode and "heal" the file structure. 4. Renaming & Organizing If you're uploading this to a professional platform