How to find your Avid serial number
First: Install the demo version of ReelSmart Motion Blur (RSMB) or Twixtor (whichever product you will be using within your Avid product).
Then, restart your Avid system.
After installing the demo version of RSMB or Twixtor, apply the plugin to a clip. The serial number is displayed you go to register the plugin. If you do not have a valid registration key for RSMB or Twixtor, don't worry... we are sending you to the registration area because the information you need to send to us to make a registration key is displayed on the registration dialog box. After applying the plugin, click on the "About" box .

After you click on the "About" box, a registration window will come up with the serial number:
On Macintosh, there is an interim dialog box and you must click the "Enter Registation Key" button.

Then another dialog box appears with the serial number.

On Windows:

This serial number displayed (the 8 to 12 digit number) is what we need to create a license for you. This is the serial number you should return to us when asked for a serial number, and is also the number you need to put in our "machine info" area on our checkout page when ordering a plugin.