In our community, we have a number of webinar recordings we would like to share 'inline' (vs. an external link), but the video file (MP4) is greater than 511MB.

At the moment, I am uploading these larger files to a GoogleDrive, and providing the link which opens up in a new window. Not terrible, but not elegant either.

Is there any way to increase the 511MB file size limit? I seem to remember this limit is hard-coded into the platform, but checking here just in case I've missed anything.

Have you checked your server configuration?

I am on an Invision cloud account ....

Then log a ticket with support.