Random Counter

Autodesk Smoke Tips & Tricks - Random Counter

Ready a clip, a 10 frame clips with 0 to 9 at the center of screen.
Load it as media 4 times. Arange them side by side.In the media slip and matte slip of each media, enter expression :

frametoslip(truerand(1,10))

Play it, you will see the random numbers.Now, we add motion blur to it.

in media1 blur Y enter expression : media.media1.slip *10

in media2 blur Y enter expression : media.media2.slip *10

in media3 blur Y enter expression : media.media3.slip *10
in media4 blur Y enter expression : media.media4.slip *10

The final result,