My hard drive died so I got a new HP.

I downloaded what I believed to be the same Pro Converter that I had last time. I am now upgrading to the new version - it looks much nicer!

After adding a file, I'm asked what format to convert to - which I didn't notice before. The formats that I'm choosing do not look good once I post them. I only want to do videos of dog training and post on Facebook. Can you please recommend what I should use?