ffmpeg split into frames

Question

Hey, I want to split a video which is one second long (25fps)into 25 seperate video files. I know I can split it up into jpegs but I need to retain the audio. So when I recompile audio is still there.

This is what I tried to grab the first frame only (with audio):

ffmpeg -i 1.mov -vcodec mjpeg -qscale 1 -an -ss 00:00:00:00 -t 00:00:00:1 frame1.mov

But it doesn't seem to work. Am I wrong in assuming ffmpeg supports time stamps in this format? hh:mm:ss:f?

Thanks