more info for new feature

CHANGELOG.md

@@ -3,8 +3,12 @@
 ## 0.5.6
 
 * Using WebRTC version M93.
-* New `dynacast` option to `RoomOptions`.
+* New `dynacast` option to `RoomOptions`. Dynacast dynamically pauses
+  video layers that are not being consumed by any subscribers, significantly
+  reducing publishing CPU and bandwidth usage. (currently defaults to off)
 * Rename `optimizeVideo` to `adaptiveStream` and improve stability.
+  AdaptiveStream lets LiveKit automatically manage quality of subscribed 
+  video tracks to optimize for bandwidth and CPU.
 
 ## 0.5.5
 

lib/src/options.dart

@@ -44,12 +44,13 @@ class RoomOptions {
   /// Default options used when publishing a [LocalAudioTrack].
   final AudioPublishOptions defaultAudioPublishOptions;
 
-  /// When this is turned on, the following optimizations will be made:
-  /// - [RemoteTrackPublication] will be enabled/disabled based on the corresponding
-  /// [VideoTrackRenderer]'s visibility on screen.
-  /// - Re-sizing a [VideoTrackRenderer] will signal the server to send down
-  /// a relavant quality layer (if simulcast is enabled on the publisher)
-  /// Defaults to false.
+  /// AdaptiveStream lets LiveKit automatically manage quality of subscribed
+  /// video tracks to optimize for bandwidth and CPU.
+  /// When attached video elements are visible, it'll choose an appropriate
+  /// resolution based on the size of largest video element it's attached to.
+  ///
+  /// When none of the video elements are visible, it'll temporarily pause
+  /// the data flow until they are visible again.
   final bool adaptiveStream;
 
   /// enable Dynacast, off by default. With Dynacast dynamically pauses