[video_player_platform_interface] Improve seek performance on Android

packages/video_player/video_player_platform_interface/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 6.9.0
+
+* Adds `backBufferDurationMs` to `VideoPlayerOptions` to support configuring ExoPlayer back buffer duration on Android.
+
 ## 6.8.0
 
 * Adds `preventsDisplaySleepDuringVideoPlayback` to `VideoPlayerOptions` and

packages/video_player/video_player_platform_interface/lib/video_player_platform_interface.dart

@@ -472,7 +472,11 @@ class VideoPlayerOptions {
     this.allowBackgroundPlayback = false,
     this.preventsDisplaySleepDuringVideoPlayback = true,
     this.webOptions,
-  });
+    this.backBufferDurationMs,
+  }) : assert(
+         backBufferDurationMs == null || backBufferDurationMs >= 0,
+         'backBufferDurationMs must be zero or greater',
+       );
 
   /// Set this to true to keep playing video in background, when app goes in background.
   /// The default value is false.
@@ -494,6 +498,12 @@ class VideoPlayerOptions {
 
   /// Additional web controls
   final VideoPlayerWebOptions? webOptions;
+
+  /// ** Android only **. Sets ExoPlayer's back buffer duration in milliseconds.
+  /// 
+  /// This is not possible on iOS because AVPlayer does not provide a way to
+  /// configure the back buffer duration.
+  final int? backBufferDurationMs;
 }
 
 /// [VideoPlayerWebOptions] can be optionally used to set additional web settings
@@ -593,13 +603,20 @@ class VideoViewOptions {
 @immutable
 class VideoCreationOptions {
   /// Constructs an instance of [VideoCreationOptions].
-  const VideoCreationOptions({required this.dataSource, required this.viewType});
+  const VideoCreationOptions({
+    required this.dataSource,
+    required this.viewType,
+    this.videoPlayerOptions,
+  });
 
   /// The data source used to create the player.
   final DataSource dataSource;
 
   /// The type of view to be used for displaying the video player
   final VideoViewType viewType;
+
+  /// Additional configuration options for the video player.
+  final VideoPlayerOptions? videoPlayerOptions;
 }
 
 /// Represents an audio track in a video with its metadata.

packages/video_player/video_player_platform_interface/pubspec.yaml

@@ -4,7 +4,7 @@ repository: https://github.com/flutter/packages/tree/main/packages/video_player/
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+video_player%22
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 6.8.0
+version: 6.9.0
 
 environment:
   sdk: ^3.10.0

packages/video_player/video_player_platform_interface/test/video_player_options_test.dart

@@ -18,4 +18,12 @@ void main() {
     final options = VideoPlayerOptions();
     expect(options.preventsDisplaySleepDuringVideoPlayback, true);
   });
+  test('VideoPlayerOptions backBufferDurationMs defaults to null', () {
+    final options = VideoPlayerOptions();
+    expect(options.backBufferDurationMs, null);
+  });
+  test('VideoPlayerOptions backBufferDurationMs stores configured value', () {
+    final options = VideoPlayerOptions(backBufferDurationMs: 20000);
+    expect(options.backBufferDurationMs, 20000);
+  });
 }