'06 Yaris grinding noice

2006 yaris makes a weird grinding noise

Hey Scotty and floks,

i have a 2006 Yaris 1.3l with just 20k miles, but i've trashed on her so the mileage doesn't say a lot. Anyways she's making a weird grinding noice when she is cold under acceleration. When she is up to temperature the sound goes away. How can i find out where the noice is coming from. It could be anything in my book. Engine, transmission, clutch, differential, throwout bearing?

thank you in advance and cheers!

here's how to find the noise source https://www.youtube.com/watch?v=pqh1oH8mEqY