[rinchik]

"parts of the main video that are ads" - well, i'm not sure what those are. Is it something that happens when they record a program from a TV and then upload that video to youtube without removing TV ads?

[hombre_fatal]

Imagine a Youtube video where the host takes a break to read off an advertisement and that you'll get a 10% discount if you use their code during the checkout process. And then they resume with their content.

They often will pre-record these segments with a consistent "now with a quick word about our sponsors" jingle which can be statically detected and removed from the video.

[faissaloo]

It means things like sponsor spots where the YouTuber starts talking about some random mobile game or VPN provider you can tell they don't really care about

[Mirioron]

They are sponsor segments like this: https://www.youtube.com/watch?v=a8apEJ5Zt2s&t=33s

[archie2]

Some YouTubers do ad reads during their videos from sponsors.

[input_sh]

"This video is sponsored by X. Get N% off by going to example.com/mychannelname or use the code mychannelname at checkout."

[rinchik]

Got it! Thank you all for clarification, my comment is irrelevant then.

[notatoad]

it's the sort of thing that happens at 4:10 in this video: https://youtu.be/jxICCEoiq74?t=240