diff --git a/media/libstagefright/mpeg2ts/ATSParser.cpp b/media/libstagefright/mpeg2ts/ATSParser.cpp
index e13464e..72f1282 100644
--- a/media/libstagefright/mpeg2ts/ATSParser.cpp
+++ b/media/libstagefright/mpeg2ts/ATSParser.cpp
@@ -724,8 +724,10 @@
         const uint8_t *data, size_t size) {
     LOGV("onPayloadData mStreamType=0x%02x", mStreamType);
 
-    CHECK(PTS_DTS_flags == 2 || PTS_DTS_flags == 3);
-    int64_t timeUs = mProgram->convertPTSToTimestamp(PTS);
+    int64_t timeUs = 0ll;  // no presentation timestamp available.
+    if (PTS_DTS_flags == 2 || PTS_DTS_flags == 3) {
+        timeUs = mProgram->convertPTSToTimestamp(PTS);
+    }
 
     status_t err = mQueue->appendData(data, size, timeUs);
 
diff --git a/media/libstagefright/mpeg2ts/ESQueue.cpp b/media/libstagefright/mpeg2ts/ESQueue.cpp
index f8a1d84..a56da36 100644
--- a/media/libstagefright/mpeg2ts/ESQueue.cpp
+++ b/media/libstagefright/mpeg2ts/ESQueue.cpp
@@ -444,6 +444,10 @@
         }
     }
 
+    if (timeUs == 0ll) {
+        LOGV("Returning 0 timestamp");
+    }
+
     return timeUs;
 }