: 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.
: You can add or change tags like Title and Author using Kdenlive or Adobe Premiere Pro . 📝 Technical Specs of MP4
: If the file is damaged, tools like FFmpeg can often "re-mux" (repackage) the video stream without losing quality to fix header issues.
While appears to be a specific video filename, there is no widely documented or public "viral" content associated with that exact name. It likely refers to a file from a personal camera, dashcam, or security system where "Ajb" or "MP4" are part of the device's naming convention or model (such as the Mercedes-Benz Actros MP4 automotive series).