Ufo slowly drifts down then zooms across sky at an incredible speed

I was sitting down next to a friend when i saw something in the sky, i thought it might’ve been a shooting star, it was slowly drifting down but stopped in the air for maybe 2 or 3 seconds and I tried to get a video and that’s when it zoomed across the sky at a speed impossible for a non moving craft to have. My friend and I were shocked and didn’t know what to think.  I only wish I could’ve gotten video proof. Was around 12 that night. It was high in the sky and couldn’t very clearly make out shape or anything but it was white.