diff --git a/src/connectors/conn_http_progressive_mp4.cpp b/src/connectors/conn_http_progressive_mp4.cpp
index 4a458be2..5e8dbf79 100644
--- a/src/connectors/conn_http_progressive_mp4.cpp
+++ b/src/connectors/conn_http_progressive_mp4.cpp
@@ -175,7 +175,7 @@ namespace Connector_HTTP {
                 //STSS Box here
                 MP4::STSS stssBox;
                 stssBox.setVersion(0);
-                int tmpCount = 0;
+                int tmpCount = 1;
                 int tmpItCount = 0;
                 for ( std::deque< DTSC::Key>::iterator tmpIt = metaData.tracks[*it].keys.begin(); tmpIt != metaData.tracks[*it].keys.end(); tmpIt ++) {
                   stssBox.setSampleNumber(tmpCount,tmpItCount);