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MediaSource: setLiveSeekableRange() method - Web APIs | MDN
setLiveSeekableRange(start, end)
start
The start of the seekable range to set in seconds measured from the beginning of the
source. If the duration of the media source is positive infinity, then the
TimeRanges
object returned by the
HTMLMediaElement.seekable
property will have a start timestamp no
greater than this value.
end
The end of the seekable range to set in seconds measured from the beginning of the
source. If the duration of the media source is positive infinity, then the
TimeRanges
object returned by the
HTMLMediaElement.seekable
property will have an end timestamp no
less than this value.