new LiveTracker(player, optionsopt)

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 20](https://docs.videojs.com/live-tracker.js.html#line20)

Creates an instance of this class.

Parameters:

Methods

atLiveEdge() → {boolean}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 330](https://docs.videojs.com/live-tracker.js.html#line330)

Determines if currentTime is at the live edge and won’t fall behind on each seekableendchange

Returns:

boolean -

Wether playback is at the live edge

behindLiveEdge() → {boolean}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 368](https://docs.videojs.com/live-tracker.js.html#line368)

If we are currently behind the live edge, aka currentTime will be behind on a seekableendchange

Returns:

boolean -

If we are behind the live edge

dispose()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 395](https://docs.videojs.com/live-tracker.js.html#line395)

Dispose of liveTracker

handleDurationchange()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 131](https://docs.videojs.com/live-tracker.js.html#line131)

handle a durationchange event on the player and start/stop tracking accordingly.

handleFirstTimeupdate()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 182](https://docs.videojs.com/live-tracker.js.html#line182)

handle the first timeupdate on the player if it wasn’t already playing when live tracker started tracking.

handlePlay()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 203](https://docs.videojs.com/live-tracker.js.html#line203)

handle the first play on the player, and make sure that we seek right to the live edge.

handleSeeked()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 191](https://docs.videojs.com/live-tracker.js.html#line191)

Keep track of what time a seek starts, and listen for seeked to find where a seek ends.

handleVisibilityChange()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 72](https://docs.videojs.com/live-tracker.js.html#line72)

toggle tracking based on document visiblility

isLive() → {boolean}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 319](https://docs.videojs.com/live-tracker.js.html#line319)

Determines if the player is live, only checks if this component is tracking live playback or not

Returns:

boolean -

Wether liveTracker is tracking

isTracking()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 375](https://docs.videojs.com/live-tracker.js.html#line375)

Wether live tracker is currently tracking or not.

liveCurrentTime() → {number}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 340](https://docs.videojs.com/live-tracker.js.html#line340)

get what we expect the live current time to be

Returns:

number -

The expected live current time

liveWindow() → {number}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 301](https://docs.videojs.com/live-tracker.js.html#line301)

Get the live time window aka the amount of time between seekable start and live current time.

Returns:

number -

The amount of seconds that are seekable in the live video.

nextSeekedFromUser()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 235](https://docs.videojs.com/live-tracker.js.html#line235)

The next seeked event is from the user. Meaning that any seek

2s behind live will be considered behind live for real and liveTolerance will be ignored.

pastSeekEnd() → {number}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 351](https://docs.videojs.com/live-tracker.js.html#line351)

The number of seconds that have occured after seekable end changed. This will be reset to 0 once seekable end changes.

Returns:

number -

Seconds past the current seekable end

reset_()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 211](https://docs.videojs.com/live-tracker.js.html#line211)

Stop tracking, and set all internal variables to their initial value.

seekableEnd() → {number}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 257](https://docs.videojs.com/live-tracker.js.html#line257)

A helper to get the player seekable end so that we don’t have to null check everywhere

Returns:

number -

The furthest seekable end or Infinity.

seekableStart() → {number}

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 278](https://docs.videojs.com/live-tracker.js.html#line278)

A helper to get the player seekable start so that we don’t have to null check everywhere

Returns:

number -

The earliest seekable start or 0.

seekToLiveEdge()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 382](https://docs.videojs.com/live-tracker.js.html#line382)

Seek to the live edge if we are behind the live edge

startTracking()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 153](https://docs.videojs.com/live-tracker.js.html#line153)

start tracking live playback

stopTracking()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 242](https://docs.videojs.com/live-tracker.js.html#line242)

stop tracking live playback

toggleTracking()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 138](https://docs.videojs.com/live-tracker.js.html#line138)

start/stop tracking

trackLive_()

[live-tracker.js](https://docs.videojs.com/live-tracker.js.html), [line 88](https://docs.videojs.com/live-tracker.js.html#line88)

all the functionality for tracking when seek end changes and for tracking how far past seek end we should be