#581 Buffer Full Video. Preload whole videos. (issue: fail for biggest videos by browser defaults)

js&css/web-accessible/www.youtube.com/player.js

@@ -488,7 +488,20 @@ ImprovedTube.playerQuality = function (quality = this.storage.player_quality) {
 		player.setPlaybackQuality(quality);
 		player.dataset.defaultQuality = quality;
 	}
+
+    // --- Place your advanced buffering logic here ---
+    const video = this.elements.video;
+    if (ImprovedTube.storage.get('advanced_video_buffering') === true && video) {
+  video.preload = 'auto';
+  let originalTime = video.currentTime;
+  let bufferSeconds = ImprovedTube.storage.get('buffer_seconds') || 30;
+  let bufferTime = Math.min(video.duration || (originalTime + bufferSeconds), originalTime + bufferSeconds);
+  video.currentTime = bufferTime;
+  video.currentTime = originalTime;
+}
+
 };
+
 /*------------------------------------------------------------------------------
 QUALITY WITHOUT FOCUS
 ------------------------------------------------------------------------------*/

js&css/web-accessible/www.youtube.com/settings.js

@@ -180,3 +180,23 @@ ImprovedTube.youtubeLanguage = function () {
 		}
 	}
 };
+
+
+/*-----------------------------------------------------------------------------
+4.10.5 ADVANCED VIDEO BUFFERING
+-----------------------------------------------------------------------------*/
+
+ImprovedTube.advancedVideoBuffering = function () {
+    // You could add any change/display logic here if required,
+    // but the player logic will use ImprovedTube.storage.get('advanced_video_buffering')
+    // for the effective toggle.
+    // This stub is needed for extension settings consistency.
+	var enabled = this.storage.advanced_video_buffering;
+
+    // All logic to apply buffering/preload goes in player.js.
+    // Optionally: reload/update the player if the setting was changed.
+    if (changed) {
+        // You can reload the player or re-apply settings if needed:
+        ImprovedTube.applyPlayerSettings && ImprovedTube.applyPlayerSettings();
+}
+};