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Introduction

The articles in this section describe how to implement common use-cases related to text tracks, subtitles, closed captions and metadata. These use-cases can range from programmatically detecting new metadata, to side-loading subtitles.

The Text Track Rendering feature flag makes THEOplayer capable of supporting

  • subtitle and closed caption formats like WebVTT, CEA-608, DVB Subs and TTML;
  • metadata formats like ID3, emsg, EventStream and EXT-X-DATERANGE.

The Text Track Rendering feature exposes the TextTracks API. This API allows developers to programmatically switch between text tracks, detect events related to text tracks (e.g. new active cue) and more.

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