iPhone 12 Pro messaging videos with blue / turquoise / cyan video
My partner has a new iPhone 12 Pro running iOS 14.1. Sometimes when she sends videos recorded on the new iPhone 12 Pro via Messages, the recipients get video that is just a solid blue / turquoise / cyan (adding colors to help searchers!) color rather than the actual video content. Audio comes through just fine. It's actual videos (attempting to be) sent, not links to iCloud videos. Might be with bigger videos -- the ones where it's happened have been larger (1:20 or longer). I just used her iPhone 12 Pro to send a video recorded on her old phone, and that transmitted fine.
So, bottom line: looks like longer videos recorded on iPhone 12 Pro sent via messages get video replaced with a solid turquoise image.
Any thoughts?