TrackGroup

class TrackGroup

An immutable group of tracks available within a media stream. All tracks in a group present the same content, but their formats may differ.

As an example of how tracks can be grouped, consider an adaptive playback where a main video feed is provided in five resolutions, and an alternative video feed (e.g., a different camera angle in a sports match) is provided in two resolutions. In this case there will be two video track groups, one corresponding to the main video feed containing five tracks, and a second for the alternative video feed containing two tracks.

Note that audio tracks whose languages differ are not grouped, because content in different languages is not considered to be the same. Conversely, audio tracks in the same language that only differ in properties such as bitrate, sampling rate, channel count and so on can be grouped. This also applies to text tracks.

Note also that this class only contains information derived from the media itself. Unlike Tracks.Group, it does not include runtime information such as the extent to which playback of each track is supported by the device, or which tracks are currently selected.

Summary

@UnstableApi
TrackGroup(formats: Array<Format!>!)

@UnstableApi
TrackGroup(id: String!, formats: Array<Format!>!)

@UnstableApi
fun copyWithId(id: String!): TrackGroup!

fun equals(obj: Any?): Boolean

@UnstableApi
java-static fun fromBundle(bundle: Bundle!): TrackGroup!

@UnstableApi
fun getFormat(index: Int): Format!

fun hashCode(): Int

@UnstableApi
fun indexOf(format: Format!): Int

@UnstableApi
fun toBundle(): Bundle!

fun toString(): String!

@UnstableApi
val id: String!

@UnstableApi
val length: Int

@UnstableApi
@C.TrackType
val type: Int