diff --git a/libeplayer3/output/writer/dts.c b/libeplayer3/output/writer/dts.c
index dc1e38a..1de496f 100644
--- a/libeplayer3/output/writer/dts.c
+++ b/libeplayer3/output/writer/dts.c
@@ -122,8 +122,6 @@ static int writeData(void* _call)
         return 0;
     }
 
-    memset (PesHeader, '0', PES_AUDIO_HEADER_SIZE);
-
 // #define DO_BYTESWAP
 #ifdef DO_BYTESWAP
     unsigned char *Data = (unsigned char *) malloc(call->len);
diff --git a/libeplayer3/output/writer/vc1.c b/libeplayer3/output/writer/vc1.c
index 6f07f38..511c129 100644
--- a/libeplayer3/output/writer/vc1.c
+++ b/libeplayer3/output/writer/vc1.c
@@ -231,7 +231,6 @@ static int writeData(void* _call)
             vc1_printf(20, "PacketLength=%d, Remaining=%d, Position=%d\n", PacketLength, Remaining, Position);
 
             unsigned char       PesHeader[PES_MAX_HEADER_SIZE];
-            memset (PesHeader, '0', PES_MAX_HEADER_SIZE);
             int                 HeaderLength = InsertPesHeader (PesHeader, PacketLength, VC1_VIDEO_PES_START_CODE, call->Pts, 0);
 
             if(insertSampleHeader) {
diff --git a/libeplayer3/output/writer/wmv.c b/libeplayer3/output/writer/wmv.c
index 8d12b73..57417b3 100644
--- a/libeplayer3/output/writer/wmv.c
+++ b/libeplayer3/output/writer/wmv.c
@@ -216,7 +216,6 @@ static int writeData(void* _call)
             wmv_printf(20, "PacketLength=%d, Remaining=%d, Position=%d\n", PacketLength, Remaining, Position);
 
             unsigned char       PesHeader[PES_MAX_HEADER_SIZE];
-            memset (PesHeader, '0', PES_MAX_HEADER_SIZE);
             int                 HeaderLength = InsertPesHeader (PesHeader, PacketLength, VC1_VIDEO_PES_START_CODE, call->Pts, 0);
 
             if(insertSampleHeader) {