Hello All, this has been bothering me for some time, so just posting for wider audience. Facts, all applicable to rekonq and konqueror with webkit part - I have qtwebkit,kwebkitpart and rekonq installed - I am on youtube html5 demo trial. youtube.com/html5 reports support for webm and h.264 support - html5test.com reports video element support with MPEG-4/H.264/Ogg Theora/WebM. I have gstreamer phonon backend with most of the codecs installed. - youtube html5 video does not work. I get a progress bar but no video frames. example URL tested http://www.phoronix.com/scan.php?page=news_item&px=MTA1MTQ as it has couple of youtube videos embedded - videos from vimeo.com does not play either. google isn't helpful. and there is no bug in arch linux bug db. Does anybody else experience this too? -- Regards Shridhar