I used some speech from a university’s documentary short which is on YouTube, but it’s something they created more in the public interest rather than to make money. I obscured it to the point that you can only partially hear what’s being said.
Personally I’d err on the side of caution. The local bands I know who use samples from films tend to release 100 copies or less and only put their music through Bandcamp, not Spotify/YouTube etc. There’s a monologue from a horror movie I’d like to use in a song one day, but it’s freakin’ 40 seconds long. Even though I love the album format I’d probably make it a single on Bandcamp/Soundcloud only.