Fix mono audio playback on Chrome. Issue # 75

eutychus · Dec 8, 2015 · 94f4d63 · 94f4d63
1 parent 8417f3a
commit 94f4d63
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/demux/tsdemuxer.js b/src/demux/tsdemuxer.js
@@ -594,8 +594,10 @@
         // multiply frequency by 2 (see table below, equivalent to substract 3)
         adtsExtensionSampleingIndex = adtsSampleingIndex - 3;
       } else {
-        // if (manifest codec is AAC) AND (frequency less than 24kHz OR nb channel is 1)
-        if (audioCodec && audioCodec.indexOf('mp4a.40.2') !== -1 && (adtsSampleingIndex >= 6 || adtsChanelConfig === 1)) {
+        // if (manifest codec is AAC) AND (frequency less than 24kHz OR nb channel is 1) OR (manifest codec not specified and mono audio)
+		// Chrome fails to play back with AAC LC mono when initialized with HE-AAC.  This is not a problem with stereo.
+        if (audioCodec && audioCodec.indexOf('mp4a.40.2') !== -1 && (adtsSampleingIndex >= 6 || adtsChanelConfig === 1) ||
+            (!audioCodec && adtsChanelConfig === 1)) {
           adtsObjectType = 2;
           config = new Array(2);
         }