When writing a book, can you use short quotes in the book if you just source the secondary source of the quotes?

For instance, one short quote of two sentences I have is sourced to a YouTube clip that is of a local TV news show segment, but I can only source the YouTube video because I do not even know how to find where and how it originally aired. Or could this become a copyright issue?

Similarly, another quote is sourced to another book where it is found, but the original source of the quoted material, according to that book, is apparently in some video clip from forever ago that I have not seen (or can find) myself.

Are these things still fine, can I just source that book and that YouTube video for the quotes, or can I get into copyright trouble if I do not say, as well as I can, where the originals are from? Any other authors here who has encountered similar issues?