A:AnswerWorks fine for YouTube videos did 41 or more videos for our church in 1080P 60 frames a second which is good and you just need an audio cord if you plug it into a soundboard for everyday use for audio you need nothing the mic on the camera is good enough
A:AnswerYes, it is WI-FI capable.
I have the HF R80. Page 20 (English) of the Quick Guide describes some of the basic features such as controlling the camera from a Phone or Tablet.
More info is available in the downloadable Manual.
Hope this helps.