Thanks for sharing the details about the microwave conversion service but the link to the documentation seems broken.
We have already explored the PDF option.
Conversion to PDF works fine for presentations without animations.
With animations included to explain concepts, even if we split the animated slide over multiple pages (there are plugins for Libreoffice and PowerPoint), the reader experience via the Kolibri interface is not what’s desirable - the page flow being in a continuous mode rather than similar to a presentation.
Hence we need to explore the HTML5 option. We have approximately 300+ such files and growing.
Original file - https://drive.google.com/file/d/0B24oC9_UeWbaR192d2tydDJicjg/view?usp=drivesdk
Converted PDF - https://drive.google.com/file/d/1jazO6YygyfnzIj-CffmRyVKtdhsUB3Ui/view?usp=drivesdk
HTML5 - Have found a few free and paid services. One result from a paid service is herein which is acceptable and it works fine in Kolibri as well. None of the free services produced the desired results.
If anyone is aware of a similar service / tool which is either opensource and / or free for LibreOffice and MS Office, please share.