diff --git a/trunk/research/players/srs_player/src/HlsNetStream.as b/trunk/research/players/srs_player/src/HlsNetStream.as
index 6ad04a561..553741bb1 100755
--- a/trunk/research/players/srs_player/src/HlsNetStream.as
+++ b/trunk/research/players/srs_player/src/HlsNetStream.as
@@ -1838,7 +1838,7 @@ class SrsUtils
         var v:int = (1 << leadingZeroBits) - 1;
         for (var i:int = 0; i < leadingZeroBits; i++) {
            b = stream.read_bit();
-            v += b << (leadingZeroBits - 1);
+            v += b << (leadingZeroBits - 1 - i);
         }
         
         return v;
@@ -5371,4 +5371,4 @@ class M3u8
     {
         return _variant;
     }
-}
\ No newline at end of file
+}