Serious oil leak

This is hard to know based on this information. Where is the leak coming from now? When you repaired all these seals were they leaking or has this happened since you repaired them?

Also, can you get a couple pictures of where this is coming from so we can find out possible causes? Lastly what type of oil is it that is leaking, transmission or engine oil?

Here is a guide that will help with more general items:

https://www.2carpros.com/articles/engine-is-leaking-oil

Thanks

So I think we are confusing issues because white smoke would mean coolant is getting burned through the engine and not oil. Oil would be more blue.

Here is a guide about the smoke that will explain it in more detail:

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

As for the oil, you said in the video that you checked the oil and it was not like that and now it is? How did you check the oil? Can you get a picture of the dipstick that you used and did you add any oil? If so, just make sure the cap is back on the engine and tight.

Also, if you can give more detail about when this started. If it wasn't like this, can you tell me where the most amount of oil is and what color it is? Get a picture of this oil on a piece of paper if you need too. Thanks

I am not sure you need to rebuild it but if you are going to do the work, I would always rebuild it. If you are going to pay someone, then I would get a used engine with a warranty on it just in case it has an issue.