Transmission fluid leak

Hello everybody thank you in advance and I hope you're having a good Wednesday.

My vehicle has been sitting in the driveway for at least a week now, I was intending on changing spark plugs, crankshaft sensor, and one ignition coil.

I changed my spark plugs today, and I looked under the car to see a massive liquid spot! Two different spots, it came up pink so I know it's transmission fluid. It actually appears to be a gnarly leak, it looks really wet on the pain and on some pipes down there. There's also another spot closer to the front of the vehicle.

I was not awake of any transmission fluid leaks when I parked it there, and like I said I haven't started it or driven it. Why all of a sudden did it start to leak and what can I do to investigate further/fix it?

Thank you so much! You guys are my car and wallet savers, I appreciate this website greatly.

I attached a video I shot under the vehicle, hopefully it is okay an okay view. Let me know if you want a clearer shot.