Make videos from your lecture slides, business presentation, research presentation, etc. See the introductions below:
https://www.enlight.world/LVM
https://www.enlight.world/LVM/how-to-create-online-course-materials-for-free

* HOW TO USE *

1. Install the add-on for Google Slides from Google Workspace Marketplace.
2. Record your voice OR synthesize the speech from notes on each slide.
3. Just press the [generate video] button on the sidebar.
4. Wait for some minutes...
5. The generated video will be downloaded on your computer.


* FEATURES *

-- Voice over in each slide --
-- Speech synthesis (optional) --
-- Sound and movie embedding --
-- BGM overlay --
-- Resource files export --


* LIMITATIONS *

- Video generation is processed within your web browser. It requires sufficient memory and processing power.

- Transitions and shape animations set in slides are ignored since there are no technical means to capture such information by Google Editor Add-On. But, the Add-On provides own various transition effects. 

- The intended use of the tool is to making lecture or explanatory videos with low frame rates. It does not have rich design capability.