Merge pull request #3159 from fraunhoferfokus/bugfix-livestreamjump

[Fix] Avoid jumps in the livestream when an incorrect currentTime is reported by video element

src/streaming/controllers/PlaybackController.js

@@ -400,10 +400,14 @@ function PlaybackController() {
         const DVRWindow = DVRMetrics ? DVRMetrics.range : null;
         let actualTime;
 
-        if (!DVRWindow) return NaN;
+        if (!DVRWindow) {
+            return NaN;
+        }
         if (currentTime > DVRWindow.end) {
             actualTime = Math.max(DVRWindow.end - streamInfo.manifestInfo.minBufferTime * 2, DVRWindow.start);
-        } else if (currentTime > 0 && currentTime + 0.250 < DVRWindow.start && DVRWindow.start - currentTime > DVRWindow.start - 315360000) {
+
+        } else if (currentTime > 0 && currentTime + 0.250 < DVRWindow.start && Math.abs(currentTime - DVRWindow.start) < 315360000) {
+
             // Checking currentTime plus 250ms as the 'timeupdate' is fired with a frequency between 4Hz and 66Hz
             // https://developer.mozilla.org/en-US/docs/Web/Events/timeupdate
             // http://w3c.github.io/html/single-page.html#offsets-into-the-media-resource