UFO sighting

UFO sighting
Time:around 8pm 
Location: York PA

I’m pretty amazed at what I just seen. I was out with my dog when I noticed a light coming closer and getting brighter. When it started getting very bright it almost looked like it was changing shape and releasing a massive cloud of something. As soon as I seen this I pulled out my phone as fast as I could. Shortly after I started recording it seemed to change direction a bit and get too high for me to be able to see it anymore. I live very close to 2 airports so I see many things in the sky every day but this was unlike anything I’ve ever seen. Sorry for the shaky video. I was holding my dogs leash while trying to record with her pulling me.