I am creating a YouTube video in which I would like to include some images that have CC-BY-SA (v3 and v4) licenses. I understand that my video would then be considered a derivative work and that I would have to use a compatible license for it.
However, YouTube only allow two different choices: YouTube Standard License and CC-BY. Would it be enough to set the license on YouTube to CC-BY and then write in the description that the license is CC-BY-SA (v4 probably) and link to the license, attribute the original creators etc?
Will this somehow override the less restrictive CC-BY license or will this be an infringement since I have set the video to CC-BY?