i think i forgot to mention that you have to select for example blacksite in csgo video options after replacing files and relaunching cs to make it work.
links:
youtube to mp4 converter: link deleted due to youtube issues
mp4 to webm converter: https://cloudconvert.com/webm-to-mp4
google drive with my backgrounds and probably outdated nixware lua script for blur:
https://drive.google.com/file/d/1cEi4...
example blur lua:
local convar = se.get_convar("@panorama_disable_blur")
convar:set_int(1)