Most AR platforms recommend avoiding full-frame pure black at the start to prevent "blank" triggers. How to Manage the File
Must use even numbers for width and height (e.g., 1280x720). Constraints: High Profile, not exceeding Level 5.2. AR 00103b mp4
If it is a standard MP4, it should open in VLC, Windows Media Player, or QuickTime. Most AR platforms recommend avoiding full-frame pure black
If you are trying to create an AR experience with this file, tools like Adobe Express can help ensure the MP4 is optimized for web-based AR triggers. 1280x720). Constraints: High Profile