Your devices would need to have special certificates installed to allow something like that to work. It would need to be some kind of proxy which acts as the endpoint for the data, and then something on there that filters out the adverts and presents the non-advert stream to your browser.

The data between your browser and Youtube is encrypted (the https bit) so devices on the network cannot 'see' videos or adverts or anything else. Maybe but I think it would be quite specialised. Is there something that could filter like this that sits on a network Running PiHole (latest) on RaspPi 4 8gb, no additional bits, User is also running n00bOS in relation to RaspPi and Pihole.

Are there recommendations for additional settings/setup to sort this at all? I've black and white listed as I've gone along and it seems like it alternates between the addresses feeding videos or adverts (sometimes I even get the adverts but not the video / only the first 5 seconds of the video). I'm expecting that my pihole should be able to identify the adverts and drop them off, or filtering unexpected extra connections, since there's always a pair of requests in the query log that are veeeery subtly different. I'm blacklisting the domains that start with R then a number from google but as mentioned in another thread it seems that the adverts and videos are piped from the same source, so either I get adverts and the video, or I get the first few seconds of the video then the perpetual loading notification I'm currently in a battle to block adverts without then blocking the video I want to watch. I tried searching for help on the forums regarding Youtube ads still getting through PiHole but the last ones seemed several years old.

Dns that blocks youtube ads