IE11 has not fully implemented HTML5 Video on the Windows 7 OS. The workaround is to use Flash, and I have done this quite seamlessly for some time. Now, this is a problem again since Adobe announced they are abandoning Flash Professional and moving most of the toolset to Adobe Edge Animate, which will output brilliant HTML5, but that doesn’t help me provide streaming content when the Flash Player is no longer being installed.
The only solutions available for viewing the streams effectively in all browsers seems to be keeping the Flash players alive a while longer for Win7+IE11 users.