Signs of Potential Engine Failure?

[blue62]

So first
To post a sound video and expect a diagnosis of your problem is just not a realistic expectation.
Second
you need to spend some time looking and attempting to diagnose the problem yourself.
You are closest to the car and have access to it. No one on a forum has access to the car.
If there where trouble codes or other information then possibly there could be help forthcoming from a forum. But your not showing any of that type of information.

So get a good strong flash light and view every possible area of the engine and transmission area that you can and see if you can pinpoint where the oil is coming from.
If you have to clean all the oil off then start the car and see if you can pinpoint where the oil is coming from. Then that is what you need to do.
If you have limited mechanical ability find someone who has the knowledge to diagnose the issue for you.