msujaws: Seek-previews for HTML5
“Creating an implementation of seek-previews for HTML5
Setting the currentTime attribute involves trying to get the video playback position as close as possible to the requested time. If this position is far from a keyframe, heavy decoding will be required. Implementing a “fast seek” method would greatly improve the seeking performance here. Bug 778077 was filed to implement this “fast seek” method (this will not replace currentTime). The other performance issue that will be encountered is unbuffered frames. The method of seeking the video requires downloading the part of the video being seeked to, which is obviously slow.”
