If this is an asset intended for use in an Augmented Reality environment, it typically follows these strict requirements to ensure smooth playback: H.264 video with LC-AAC audio.
Many security systems and dashcams use sequential alphanumeric naming (like AR 00101, AR 00102) for exported MP4 clips. Technical Specifications for "AR" MP4s AR 00103b mp4
Most AR platforms recommend avoiding full-frame pure black at the start to prevent "blank" triggers. How to Manage the File If this is an asset intended for use