Shaka Player supports live streaming since v1.3.0. Live streams are handled by {@link shaka.player.DashVideoSource}, and there is no difference in the API for live vs static content.
Live content can, however, contain large timestamps. This can make the built-in controls on the video tag (or any other naive UI) confusing. The currentTime on the video may report as something like 397002:54:56. This is not a very helpful or meaningful number to the user. Plus, if the video "started" over 300k+ hours ago, seeking to 0 is not realistic. The server is surely not keeping that much content sitting around.
In reality, live content limits the range in which the user may seek. One live stream may allow the user to seek backward 5 minutes, while another may allow 4 hours. If a user tries to seek to a point outside of this range, the player can clamp this value to one within the seek range. Better still is to show the user a meaningful range of content in the seek UI.
{@link shaka.player.DashVideoSource.event:SeekRangeChanged} events give the app the information it needs to present a better live stream UI. An app which does not support live streams may safely ignore them. An app which does not support seeking in a live stream may also ignore them.
A SeekRangeChanged event contains "start" and "end" timestamps which define the range of time which is currently seekable. Over time, this window of available content will move to the right in the video timeline.
The "end" time corresponds to the most recent available live content. Therefore to jump forward to the "live edge", the application would set video.currentTime to the range's "end" time.
Rather than display actual timestamps from the video stream, which may be quite large, we recommend displaying an offset from the live edge. For example, when the user is watching content 1 minute and 30 seconds behind the live edge, show "-1:30".
During live playback, the user's offset from the live edge is roughly constant, so any time code displayed would only be changed by buffering or seeking.
For an example of a UI which uses the SeekRangeChanged event, see controls.js.