getTextTrack

Description

Get information about the text track currently set. null if no text track is enabled right now.

If a text track is set and information about it is known, this method will return an object with the following properties:

  • id (Number|string): The id used to identify this track. No other text track for the same Period will have the same id.

    This can be useful when setting the track through the setTextTrack method.

  • language (string): The language the text trac./../Basic_Methods/loadVideo.md#transport set in the Manifest.

  • normalized (string): An attempt to translate the language property into an ISO 639-3 language code (for now only support translations from ISO 639-1 and ISO 639-3 language codes). If the translation attempt fails (no corresponding ISO./../Basic_Methods/loadVideo.md#transport found), it will equal the value of language

  • label (string|undefined): A human readable label that may be displayed in the user interface providing a choice between text tracks.

    This information is usually set only if the current Manifest contains one.

  • closedCaption (Boolean): Whether the track is specially adapted for the hard of hearing or not.

  • forced (Boolean): If true this text track is meant to be displayed by default if no other text track is selected.

    It is often used to clarify dialogue, alternate languages, texted graphics or location and person identification.

undefined if no text content has been loaded yet or if its information is unknown.

You can also get the information on the chosen text track for another Period by calling getTextTrack with the corresponding Period's id in argument. Such id can be obtained through the getAvailablePeriods method, the newAvailablePeriods event or the periodChange event.

// example: getting track information for the first Period
const periods = rxPlayer.getAvailablePeriods();
console.log(rxPlayer.getTextTrack(periods[0].id);
In DirectFile mode (see loadVideo options), if there is no text tracks API in the browser, this method returns "undefined".

Syntax

// Get information about the currently-playing text track
const textTrack = player.getTextTrack();

// Get information about the text track for a specific Period
const textTrack = player.getTextTrack(periodId);

  • arguments:

    1. periodId string|undefined: The id of the Period for which you want to get information about its current text track. If not defined, the information associated to the currently-playing Period will be returned.

  • return value Object|null|undefined

getTextTrack

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