mp4 video not playing HTML5 web page in Firefox after updating to openSUSE 13.2

I have a web page that has an mp4 video (h.264 encoded) which played correctly in Firefox 37 on openSUSE 12.1. I just installed openSUSE 13.2 and now it won’t play the video, instead showing the error:

No video with supported MIME type found

I installed all the multimedia codecs (as recommended on this forum) from packman and restarted but it still won’t play! What do I need to do?

Is it possible to post a link?
Or PM me

Are you sure packman is setup correctly?
as firefox uses the OS’s build-in codec to play h264 video can you play regular mp4 files in vlc/kaffeine?
how to get an mp4 file for testing, you can get one from youtube just use one of the many youtube grabbers for firefox
https://addons.mozilla.org/En-us/firefox/addon/download-youtube/
the thing is it’s not just adding packman as a repo you need to set it as the system repo and replace rpm’s that are already installed, the easiest way to do this is start yast->software management, chose repository view pick the packman repo and click on the blue link that says switch system packages to this repository, or you can do a zypper dup --from packman

edit some pages do need adobe flash to play mp4’s you might need to install flash-player

Adding “gstreamer-0_10-plugins-ffmpeg” solved the problem.