1 files changed, 5 insertions, 0 deletions
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
index ed22ade..26686ab 100644
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -2734,6 +2734,11 @@ void MPEG4Writer::Track::writeTrackHeader(bool use32BitOffset) {
     ALOGV("%s track time scale: %d",
         mIsAudio? "Audio": "Video", mTimeScale);
 
+    if (mMdatSizeBytes == 0) {
+        ALOGW("Track data is not available.");
+        return;
+    }
+
     uint32_t now = getMpeg4Time();
     mOwner->beginBox("trak");
         writeTkhdBox(now);