
1. Remove requirement for TrackRenderer implementations to report current position, unless they are time sources. 2. Expose whether renderers have media to play. The immediate benefit of this is to solve the referenced GitHub issue, and also to only display the appropriate Audio/Video/Text buttons in the demo app for the media being played. This is also a natural step toward multi-track support. Github issue: #541
Extensions
This folder contains optional ExoPlayer extensions.