Video mp4 not working on mobile Safari

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Occasional Load to Black Screen in Non-Firefox Browsers

I’m doing my first project in Phaser 3 (3.22.0) and am running into a strange issue in browsers other than Firefox (so far Chrome and Safari). Occasionally, when I reload the page, either when running on a local server or on a web server, the game loads as a blank, black screen. Even after allowing the page to load for minutes, the screen remains black. There are no errors in the console, and I’m not able to reproduce the problem consistently. Sometimes, refreshing from the black screen loads t…