Leawo Software offers both trial version and registered version of Leawo PowerPoint to DVD Pro. Both versions are free to download and install. With a license code, you could register Leawo PowerPoint to DVD Pro to experience full features without any limitation.
There are limitations on the trial version: The English trial version of Leawo PowerPoint to DVD Pro will convert PowerPoint to video and burn PowerPoint to DVD/Blu-ray content with watermark attached. And the Japanese trial version of Leawo PowerPoint to DVD Pro supports only ASF, WMV, 3GP and 3G2 output at 320*240 without watermark. If you try to output PowerPoint to video in other formats or other sizes with Leawo PowerPoint to DVD Pro (Japanese version), the output file would come out with watermark. Meanwhile, it only supports processing 1 task at a time.
Once you get a license code of Leawo PowerPoint to DVD Pro, upon the launch, you will see a window as below:
You need to enter the license code into the Registration Code box and then click the Register button 

How to register Leawo PowerPoint to DVD Pro if you haven’t got a license code? You need to firstly get a license code. You could click the Purchase button 