It turns out that chrome fails to play the videos when they are served from a SharePoint server (on our intranet). If I download the videos, I can Ctrl-O Open them in Chrome and view them. Same if I move them to a web server instead of a document folder in SharePoint. (Note that Firefox can view the files in the SharePoint folder)
Developer Tools in chrome shows the attached source. ** Attachment added: "source view when trying to play MP4 video from SharePoint folder" https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/991758/+attachment/4388543/+files/sig.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991758 Title: Chromium web browser not showing mp4 videos To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/991758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs