diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index b90c5b62..cd5d0fc8 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -225,39 +225,39 @@ type Session struct {
 // typedef struct RTMP
 // rtmp.h +237
 type C_RTMP struct {
-	m_inChunkSize          int
-	m_outChunkSize         int
-	m_nBWCheckCounter      int
-	m_nBytesIn             int
-	m_nBytesInSent         int
-	m_nBufferMS            int
-	m_stream_id            int
-	m_mediaChannel         int
+	m_inChunkSize          int32
+	m_outChunkSize         int32
+	m_nBWCheckCounter      int32
+	m_nBytesIn             int32
+	m_nBytesInSent         int32
+	m_nBufferMS            int32
+	m_stream_id            int32
+	m_mediaChannel         int32
 	m_mediaStamp           uint32
 	m_pauseStamp           uint32
-	m_pausing              int
-	m_nServerBw            int
-	m_nClientBw            int
+	m_pausing              int32
+	m_nServerBw            int32
+	m_nClientBw            int32
 	m_nClientBw2           uint8
 	m_bPlaying             uint8
 	m_bSendEncoding        uint8
 	m_bSendCounter         uint8
-	m_numInvokes           int
-	m_numCalls             int
+	m_numInvokes           int32
+	m_numCalls             int32
 	m_methodCalls          *C.RTMP_METHOD
-	m_channelsAllocatedIn  int
-	m_channelsAllocatedOut int
+	m_channelsAllocatedIn  int32
+	m_channelsAllocatedOut int32
 	m_vecChannelsIn        **C.RTMPPacket
 	m_vecChannelsOut       **C.RTMPPacket
-	m_channelTimestamp     *int
+	m_channelTimestamp     *int32
 	m_fAudioCodecs         float64
 	m_fVideoCodecs         float64
 	m_fEncoding            float64
 	m_fDuration            float64
-	m_msgCounter           int
-	m_polling              int
-	m_resplen              int
-	m_unackd               int
+	m_msgCounter           int32
+	m_polling              int32
+	m_resplen              int32
+	m_unackd               int32
 	m_clientID             C.AVal
 	m_read                 C.RTMP_READ
 	m_write                C.RTMPPacket
@@ -271,7 +271,7 @@ type C_RTMPPacket struct {
 	m_headerType      uint8
 	m_packetType      uint8
 	m_hasAbsTimestamp uint8
-	m_nChannel        int
+	m_nChannel        int32
 	m_nTimeStamp      uint32
 	m_nInfoField2     int32
 	m_nBodySize       uint32
@@ -284,14 +284,14 @@ type C_RTMPPacket struct {
 // rtmp.h +231
 type C_RTMP_METHOD struct {
 	name C.AVal
-	num  int
+	num  int32
 }
 
 // typedef struct C.AVal
 // amf.h +57
 type C_AVal struct {
 	av_val *byte
-	av_len int
+	av_len int32
 }
 
 // typedef struct RTMP_READ
@@ -317,19 +317,19 @@ type C_RTMP_READ struct {
 // typedef struct RTMP_READ
 // rtmp.h +200
 type C_RTMPSockBuf struct {
-	sb_socket   int
-	sb_size     int
+	sb_socket   int32
+	sb_size     int32
 	sb_start    *byte
 	sb_buf      [RTMP_BUFFER_CACHE_SIZE]byte // port const
-	sb_timedout int
+	sb_timedout int32
 	sb_ssl      uintptr
 }
 
 // typedef struct RTMPChunk
 // rtmp.h +105
 type C_RTMPChunk struct {
-	c_headerSize int
-	c_chunkSize  int
+	c_headerSize int32
+	c_chunkSize  int32
 	c_chunk      *byte
 	c_header     [RTMP_MAX_HEADER_SIZE]byte
 }
@@ -353,14 +353,14 @@ type C_RTMP_LNK struct {
 	pubUser       C.AVal
 	pubPasswd     C.AVal
 	extras        C.AMFObject
-	edepth        int
-	seekTime      int
-	stopTime      int
-	lFlags        int
-	swfAge        int
-	protocol      int
-	timeout       int
-	pFlags        int
+	edepth        int32
+	seekTime      int32
+	stopTime      int32
+	lFlags        int32
+	swfAge        int32
+	protocol      int32
+	timeout       int32
+	pFlags        int32
 	socksport     uint16
 	port          uint16
 }
@@ -368,7 +368,7 @@ type C_RTMP_LNK struct {
 // typedef struct AMF_Object
 // amf.h +67
 type C_AMFObject struct {
-	o_num   int
+	o_num   int32
 	o_props *C.AMFObjectProperty
 }