H.264 support for Opera and openSUSE

I am using openSUSE Leap 42.2 and Opera 46.0.2597.57. Some videos on the internet (maybe the half on YouTube) do not work on Opera. YouTube tells me that I cannot watch the video and suggests me visiting https://www.youtube.com/html5 . *H.264* and *MSE & H.264* are not supported by my browser as the page mentions, although Opera is listed as suported. I did some research and installed the following packages (which were not the sollution): - chromium-ffmpeg-extra - chromium-ffmpeg-extra-debuginfo - chromium-ffmpegsumo Maybe I need to mention that Firefox works pretty fine with YouTube and other videos that do not work on Opera. Thanks a lot for your help. PS: If this issue is fixed with openSUSE Leap 42.3 this would be an option for me, but I still hadn't enough time for an update.