Creating a video from a single image for a specific duration in ffmpeg

ffmpeg -loop 1 -i image.png -c:v libx264 -t 15 -pix_fmt yuv420p -vf scale=320:240 out.mp4

• The -t 15 makes it 15 seconds long.
• The -vf scale=320:240 sets the
  width/height.

Make sure to use the latest ffmpeg version e.g. http://johnvansickle.com/ffmpeg/