Amstrad CPC/Schneider Computer Division - Schneider corporate logo.

[ComSoft6128]

Great logo - it's simple, confident and prominent - I like this a lot and that's why you're seeing it.
Note that the "paper" and border are the same colour giving the impression of a full overscan screen.

Links:
https://www.cpcwiki.eu/index.php/Schneider
https://en.wikipedia.org/wiki/Schneider_Rundfunkwerke
https://en.wikipedia.org/wiki/Amstrad_CPC#Schneider_Computer_Division
https://www.cpc-power.com/index.php?page=detail&num=9917

Not emulated - original hardware and software.
Please note that  the aspect ratio for this YouTube video is 16:9 but the CPC monitor
has an aspect ratio of 4:3 so you may wish to adjust your viewing device accordingly.