Nikon D3200 sound problem?

I bought the wu-1a wireless mobile adapter to be able to send video's and photos to my camera, its fine I can save photos but when I save a video its black and it has a sign on the front, then I go on the app and press " photos on device" ( things I saved) and the video is there but no sound it said error code like it's not compatible?

Anyway to fix this?

Read more: Nikon D3200 sound problem?

How important is a touchscreen for video work and filmmaking?

I am thinking of buying a Nikon D5300 as my first camera for video and filmmaking purposes. I have researched very heavily and find this one to be the best.

The only problem is, there's a Nikon D5500, and I'm struggling to choose one.

The D5300 is about 350 dollars cheaper, and the two of them are pretty much identical; but the D5500 has a touchscreen, and the D5300 doesn't.

Just how important is a touchscreen for video production? Would you say that the D5500 is worth the money? Please note that this money is almost vitally needed in other places.

Read more: How important is a touchscreen for video work and filmmaking?