My experience with multimedia standards, such as MPEG-4 BIFS, made me used to very good synchronization between video streams and graphics. So I wanted to check that the same was possible with web technologies, in particular with the plugin-less HTML5. To be more precise, I would like to display graphics on top of a video in a synchronized manner, with frame accuracy. The synchronization should be preserved when: playing, at different speed; paused; seeked; when the video stalls, …. I investigated several options and present some of the results. Continue reading HTML 5 Video and SVG Graphics Synchronization