Comment 1 for bug 46217

I get that error, seemingly randomly, viewing some videos in Firefox with said plugin. This error is not 100% reproducable and I did not get it just now when visiting the linked page. Also, totem is unable (even with w32codecs and all gstreamer plugins) to play some wmv files (audio only; no video playback) and this may well be the cause of the 'video not shown...' phenomenon.