: You can add or change tags like Title and Author using Kdenlive or Adobe Premiere Pro . 📝 Technical Specs of MP4

: You can find out what device created the video by checking its metadata. On Windows, right-click the file and go to Properties > Details . For advanced info, use a tool like ExifTool to see camera model and GPS data.

: Most modern players support MP4, but if it won't open, try VLC Media Player or Windows Media Player .

: If the file is damaged, tools like FFmpeg can often "re-mux" (repackage) the video stream without losing quality to fix header issues.