title: extracting frames using FFMPEG?
body: <p>I'm trying to write code to extract 16 frames from a video file using ffmpeg (or openCV - open to suggestions) and python but I'm having a lot of trouble figuring out how to get started.<br>
  Can I use ffmpeg command lines directly in python? If so, are there commands to get the length of the clip and frame rate? How can I pull frames at equal intervals?</p>
  
  <p>Any help would be appreciated! Thank you!</p>