ExoPlayer2 addOverride: Customize Player Behavior for Specific Use Cases

addOverride is a method in the ExoPlayer2 library that allows you to add a custom override to the player's default behavior. Overrides can be used to customize the player's behavior for specific use cases.

For example, you can use addOverride to customize the player's track selection behavior. By default, the player selects the highest quality track available based on the device's capabilities and network conditions. However, you may want to override this behavior and select a specific track based on your application's requirements.

To use addOverride, you need to create an instance of the DefaultTrackSelector class and set it as the player's track selector. You can then add your custom override to the track selector using the addOverride method.

Here's an example of how to use addOverride to customize the player's track selection behavior:

// Create a DefaultTrackSelector instance
DefaultTrackSelector trackSelector = new DefaultTrackSelector();

// Create a custom track selection override
TrackSelection.Factory adaptiveTrackSelectionFactory =
    new AdaptiveTrackSelection.Factory();
TrackSelection override = adaptiveTrackSelectionFactory.createTrackSelection(
    new TrackSelection.Definition[] {
        new TrackSelection.Definition(0, 480000),
        new TrackSelection.Definition(1, 720000),
        new TrackSelection.Definition(2, 1080000)
    }
);
trackSelector.addOverride(override);

// Set the track selector as the player's track selector
SimpleExoPlayer player = new SimpleExoPlayer.Builder(context)
    .setTrackSelector(trackSelector)
    .build();

In this example, we create a custom track selection override that selects the first track with a bitrate of 480000, the second track with a bitrate of 720000, or the third track with a bitrate of 1080000. We then add this override to the track selector using addOverride and set the track selector as the player's track selector.

Note that addOverride can be used to add other types of overrides as well, such as custom media source overrides or renderer overrides. The specific type of override you add will depend on your use case.