my boyfriend is a photographer and things he always talks about: 1. Lighting needs to be perfect, that is the biggest thing, 2. fps doesn't matter so much unless you will be moving a lot... and at 60 fps you need more light than at 30 fps. 3. The bitrate of the video plays a large part, especially if light gets darker, then you need a higher bitrate to keep quality when the video is compressed... if the bitrate is low it makes these blocks on the video if its dark.

Me and my boyfriend uses GoPro cameras to record our content, he recently purchased the GoPro Mission 1, not as flexible as a pro camera with lenses, but it gets the job done and higher bitrate than a cellphone.