White.mp4 -

It is used in HDR and SDR display testing to check for "clipping" (when the white is so bright it loses detail) or color tints in grayscales.

In the world of creative assets, isn't usually a viral video. Instead, it is a functional utility file: white.mp4

Developers use it to test video player responsiveness without worrying about heavy file sizes. It is used in HDR and SDR display