title: ffmmpeg output filename manipulation - extract every n seconds and put time of frame in output file
body: <p>I have an mpg file. I want to extract a frame every 'n' seconds (example below every 2 minutes) and make a filename that matches the frame time + the start time. Can I do this in ffmpeg.</p>
  <p>ffmpeg -i '20220804 - 091910_3.mpg' -vf fps=1/120 ../test_video_images/OUTFILE03d.jpg</p>
  <p>I sse that part of the output as the command executes has time info:</p>
  <p>frame=    1 fps=0.1 q=5.3 size=N/A <strong>time=00:02:00.00</strong> bitrate=N/A speed=  15x</p>
  <p>Can I get to the time variable and append it onto the output name?</p>
  <p>Regards,</p>