A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hi Nk31,
Welcome to the community.
I tested on my end based on your description and I received the same error.
What I observed is that if I select the document library which is synced to File Explorer using OneDrive sync client, the video (.mp4) will save and upload to the site library, but if I save directly to the browser, it will give the above error.
So, both, exporting and saving process (export from PPTx to MP4 and save to team site) works when we save it to a local folder. I think when we export and save the video, PowerPoint is not able to contact the server at the backend when we direct save to browser and this could be the reason it is throwing the error about the location which is obviously available when accessed through a browser.
In this scenario, we have two options:
1. First export PPTx to mp4 and save it to local folder and then upload it to the library.
2. Use OneDrive sync client to sync your destination site library and while exporting/saving PPTx to mp4, select the local folder (by clicking File>Save As<Browse).
Further, I know to achieve this, you have to perform few extra steps and I understand the inconvenience caused by this, to make sure the Product team get to know about this, I’ll suggest you use feedback took right from the PowerPoint app itself, click File > Feedback. This is the quickest route to get your comments to the developers’ ears, this will have more impact as the feedback is coming directly from the customer.
We appreciate your understanding. Have a nice day and stay safe.
With sincerest regards,
Neha