Civic clutch/tranny making weird sounds

[Airman]

Fk7 civic with around 140k miles

The sound you see here is me lifting of the clutch during the biting point while the engine and transmission are in a different speed . The noise happens sometime. I think it's the throw out bearing, but I'm not sure. I don't think bearings make that kind of sound. It randomly started to make the sound last week, but as the day passed, it's becoming less and less frequent.

What do you guys think?

 

[Airman]

Edit: As the *days* passed. I've been continuing to drive it around and it's making the whining noise less frequently everyday.