title: What can i use to automate video snapshots
body: <p>What command line util can i use to create a thumbnail preview of a video i made? I do not want a single thumb that windows make, i want a large jpg file that has 30 or less shots so i can preview the movie w/o running it.</p>
  
  <p>I either need an app that can do a batch at once or a command line util so i can loop through a folder or w/e i need and feed it to the util. I was thinking of hacking up ffplay to do this, i dont know what i am getting myself into so is that recommended? (i used SDL many times, never its YUV settings nor with ffmpeg)</p>