Adds a sequence marker to this video.
Markers allow you to split a video up into sequences, delineated by a start and end time, given in seconds.
You can then play back specific markers via the
Note that marker timing is not frame-perfect. You should construct your videos in such a way that you allow for plenty of extra padding before and after each sequence to allow for discrepancies in browser seek and currentTime accuracy.
See https://github.com/w3c/media-and-entertainment/issues/4 for more details about this issue.
A unique name to give this marker.
The time, in seconds, representing the start of this marker.
The time, in seconds, representing the end of this marker.
This Video Game Object for method chaining.