If you want to do video, are you aware that the cost of the body is small compared to the accessories you will need to make a professional quality video.
some accessories you will want:
High Quality Video Tripod Head
High Quality Tripod legs
External Audio Recorder
Video Editing software
High End computer and video card
Clapper board or audio synching software
Lenses, of course
Its incredibly easy to spend North of $20,000 for this, its difficult to spend less.
The cost of the accessories can easily be 10 times the cost of the body, but some are resourceful and get by with much less, if you are inventive and know what you need, you can get the job done on a shoestring. Many years ago, Ed Wood made movies on a shoestring budget. His movies were very bad, but he has a cult following, and, in a way, I admire what he did with so little money.
You might want to look at a semi pro camcorder that has many of the functions you will want built-in, and at a lower cost. That will let you purchase good editing software and video card.
It would be a good way to start producing reasonable quality video and there will be enough frustration with the script, directing, editing, lighting, and talent.