I'm sure this has been asked a few times, but I am not getting a clear cut answer. I've asked in stores to and they don't give me a clear answer. How much space does a video take up, as far as MB/minute? Also, can you change the settings on the video to make it of lesser quality? Like drop it from 1080 to 720? I'm not going to be filming movies, but I'd like to be able to have a decent amount of space for some short videos when a time arises.