If you have located this file on a storage device, you can manage it using standard digital tools:
Many dash cams use alphanumeric strings (like "Ajb" followed by a sequence number) to automatically name saved recordings. These files are usually stored on an SD card. Ajb06725 mp4
If you only need the audio, you can use online conversion tools to turn the MP4 into an MP3. If you have located this file on a
Some specialized devices, such as AGPTEK MP4 players , may generate or categorize files using similar naming structures. How to Access and Use the File such as AGPTEK MP4 players