To import PowerPoint slides into Synthesia to generate a new video:
Select the New video button located in the top right of the Synthesia.
Click on Import PowerPoint option.
Upload your PowerPoint.
Notes:
The PowerPoint slides are converted to images and used as scene backgrounds.
You can't edit the content of your original slides, but you can add additional elements such as avatars, shapes, text overlays, etc.
Your fonts must be embedded in your PowerPoint file to be correctly displayed in Synthesia.