assuming from DV- no. You would need a good resizing program like Photozoom to get them into a usable shape. DPI doesn't really exist in video terms because all pixels are the same size. An NTSC frame is 720x480 pixels. A 3X5 photo at 300 dpi is 900x1500 pixels. Most of the still shots you see from movies in print are actually taken on still cameras framing the same scene as the movie camera. Hence the job, unit still photographer.
Thanks for the info. I need to produce production stills from our movie, 300 DPI minimum. What is the best option for an Indie, who could not hire a unit still photographer?...using Photozoom, taking pictures of the video monitor...?
Photozoom or Genuine Fractals. PS- it's not that tricky. I carried a 2 megapixel pocket Minolta digital camera in my pocket as I directed my first feature and 90% of the stills used in publicity were taken by me, including those published in American Cinematographer.