diff --git a/DLGPlayer/codec/DLGPlayerDecoder.m b/DLGPlayer/codec/DLGPlayerDecoder.m
index e67c9cc..a08297a 100644
--- a/DLGPlayer/codec/DLGPlayerDecoder.m
+++ b/DLGPlayer/codec/DLGPlayerDecoder.m
@@ -71,6 +71,7 @@ - (BOOL)open:(NSString *)url error:(NSError **)error {
     }
     
     // 1. Init
+    av_register_all();
     avformat_network_init();
     
     // 2. Open Input