This screenshot from a video by YouTube historian Timeworks shows an unknown video from June 26, 2005. The video ID is unfortunately nowhere visible in the video, and is omitted from the search result.
Video "THE DANCE ♥" from December 2005 (video ID: UhQ-uQeyCmE), available until at least March 2021, yet lost now.
This mysterious video was in a playlist called "Obscure/Forgotten 2005 YouTube Videos", so there is a chance someone who has downloaded the entire playlist has preserved it.
Title and description screenshot:
A rough guess is that it contained something sexually explicit, but it still went undetected for 15 years. According to YouTube policy, mildly sexual videos get age-restricted, not completely removed.
The channel (xjen13x) is terminated, meaning either they had more videos that violated YouTube policy or this one video was bad enough to merit a channel termination.
Or perhaps a stricter YouTube moderator was at work. It is well known that they handle edge cases (videos in the grey area of policy) inconsistently. It couldn't have been that bad if it was not taken down for 15 years.
I refuse to believe that a video that was on YouTube for almost the entirety of its existence was not preserved by anyone.
Last Edit: 2 hours ago by gordon: added video ID for search engines