diff --git a/media/libstagefright/codecs/aacdec/AACDecoder.cpp b/media/libstagefright/codecs/aacdec/AACDecoder.cpp
index f58c16d..2171a67 100644
--- a/media/libstagefright/codecs/aacdec/AACDecoder.cpp
+++ b/media/libstagefright/codecs/aacdec/AACDecoder.cpp
@@ -308,7 +308,7 @@
             mAnchorTimeUs
                 + (mNumSamplesOutput * 1000000) / mConfig->samplingRate);
 
-    mNumSamplesOutput += mConfig->frameLength;
+    mNumSamplesOutput += mConfig->frameLength * mUpsamplingFactor;
 
     *out = buffer;