Adding subtitles to the video player

In this section, we’ll be adding subtitles to our video player. Subtitles are crucial for making videos accessible to everyone, but they can also be great for watching videos in noisy environments or when you need to keep the volume down. In this section, we’ll learn how to load and display subtitles alongside our video while handling various formats and ensuring they sync up perfectly with our content.

To add subtitles, follow these steps:

1. Create a MediaSource for your video file, just as you would for any video playback in ExoPlayer. We did this in the previous section.
2. Create a MediaSource for your subtitle file. This often involves using SingleSampleMediaSource for single subtitle files or similar approaches for different formats.
3. Use MergingMediaSource to combine the video and subtitle sources. This merged source is then passed to the ExoPlayer instance for playback.
4. Initialize ExoPlayer with the merged...