Apply a minor offset when using MPD anchors with #t=0 for dynamic str…

…eams when calcFromSegmentTimeline is enabled (#3833)
Dash-Industry-Forum · Dec 20, 2021 · 57c0f0b · 57c0f0b
1 parent 5c9be46
commit 57c0f0b
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/streaming/controllers/StreamController.js b/src/streaming/controllers/StreamController.js
@@ -1015,7 +1015,9 @@ function StreamController() {
                 const startTimeFromUri = _getStartTimeFromUriParameters(true);
                 if (!isNaN(startTimeFromUri)) {
                     logger.info('Start time from URI parameters: ' + startTimeFromUri);
-                    startTime = Math.max(Math.min(startTime, startTimeFromUri), dvrWindow.start);
+                    // If calcFromSegmentTimeline is enabled we saw problems caused by the MSE.seekableRange when starting at dvrWindow.start. Apply a small offset to avoid this problem.
+                    const offset = settings.get().streaming.timeShiftBuffer.calcFromSegmentTimeline ? 0.1 : 0;
+                    startTime = Math.max(Math.min(startTime, startTimeFromUri), dvrWindow.start + offset);
                 }
             }
         } else {