Syntax for ffmpeg and MPG-1

Just a shameless indulgence in posting the exact syntax I found for making an MPG-1 animation out of a stack of PNG bitmaps using ffmpeg:

ffmpeg -i "zfixirishh10c4%2d.png" -y -b 2000 "zfixirish10c4E.mpg"


The number after the -b is the bitrate. Default is 200 and for an animation I just made was quite shoddy. So 2000 was 10x the default, giving higher quality and higher file size, of course.