Rainbow Hex

Immediately (Thanks Tom from RTCP!) I spotted that it was hexahue, but it was moving at too fast a pace to transcribe manually.

So, I split the video into frames, and just manually converted the hexahue to text.

(had to guess a couple of things here and there, but it was mostly fine)

Image splitter: https://www.dvdvideosoft.com/download.htm?fname=FreeVideoToJPGConverter.exe&ls=topButton (downloads on visit) Hexahue decoder: https://www.boxentriq.com/code-breaking/hexahue

Flag: zh3r0{w4s_1t_4_dr34m_0r_was_1t_7h3_r34l1ty}