diff --git a/linphone/mediastreamer2/src/mire.c b/linphone/mediastreamer2/src/mire.c
index eda05eb28..27363ec20 100644
--- a/linphone/mediastreamer2/src/mire.c
+++ b/linphone/mediastreamer2/src/mire.c
@@ -77,7 +77,7 @@ void mire_draw(MireData *d){
 
 void mire_process(MSFilter *f){
 	MireData *d=(MireData*)f->data;
-	float elapsed=f->ticker->time-d->starttime;
+	float elapsed=(float)(f->ticker->time-d->starttime);
 	if ((elapsed*d->fps/1000.0)>d->index){
 		mire_draw(d);
 		ms_queue_put(f->outputs[0],dupb(d->pic));
diff --git a/linphone/mediastreamer2/src/msresample.c b/linphone/mediastreamer2/src/msresample.c
index e68a4a057..8f29b7526 100644
--- a/linphone/mediastreamer2/src/msresample.c
+++ b/linphone/mediastreamer2/src/msresample.c
@@ -97,6 +97,7 @@ static void resample_process_ms2(MSFilter *obj){
 		short *data_out = (short*)obl->b_wptr;
 
 		int i;
+		spx_uint32_t idx;
     
 		in = (float*) alloca((size_of_input/2)*sizeof(float));
 		out = (float*) alloca((size_of_output/2)*sizeof(float));
@@ -111,8 +112,8 @@ static void resample_process_ms2(MSFilter *obj){
 
 		/* ms_message("resampling info: err=%i in_len=%i, out_len=%i", err, in_len, out_len); */
 
-		for (i=0;i<out_len;i++)
-		  data_out[i]=floor(.5+out[i]);
+		for (idx=0;idx<out_len;idx++)
+		  data_out[idx]=(short)floor(.5+out[idx]);
 		obl->b_wptr=obl->b_wptr+(out_len*2); /* size_of_output; */
 
 		mblk_set_timestamp_info(obl,dt->ts);
diff --git a/linphone/mediastreamer2/src/msrtp.c b/linphone/mediastreamer2/src/msrtp.c
index 3debd9b7b..bebe8d86a 100644
--- a/linphone/mediastreamer2/src/msrtp.c
+++ b/linphone/mediastreamer2/src/msrtp.c
@@ -35,7 +35,7 @@ struct SenderData {
 	char dtmf;
 	char relay_session_id[64];
 	int relay_session_id_size;
-	unsigned int last_rsi_time;
+	uint64_t last_rsi_time;
 	bool_t skip;
 	bool_t mute_mic;
 };
@@ -123,11 +123,7 @@ static int sender_set_relay_session_id(MSFilter *f, void*arg){
 static uint32_t get_cur_timestamp(MSFilter * f, uint32_t packet_ts)
 {
 	SenderData *d = (SenderData *) f->data;
-#if !defined(_WIN32_WCE)
-	uint32_t curts = (f->ticker->time * d->rate) / 1000LL;
-#else
-	uint32_t curts = (f->ticker->time * d->rate) / ((uint64_t)1000);
-#endif
+	uint32_t curts = (uint32_t)(f->ticker->time * (d->rate/1000));
 	int diff;
 	int delta = d->rate / 50;	/*20 ms at 8000Hz */
 	uint32_t netts;
@@ -322,7 +318,7 @@ static void receiver_process(MSFilter * f)
 	if (d->session == NULL)
 		return;
 
-	timestamp = (f->ticker->time * d->rate) / ((uint64_t)1000);
+	timestamp = (uint32_t) (f->ticker->time * (d->rate/1000));
 	while ((m = rtp_session_recvm_with_ts(d->session, timestamp)) != NULL) {
 		mblk_set_timestamp_info(m, rtp_get_timestamp(m));
 		mblk_set_marker_info(m, rtp_get_markbit(m));
diff --git a/linphone/mediastreamer2/src/msspeex.c b/linphone/mediastreamer2/src/msspeex.c
index b7aa13a6b..17a695aff 100644
--- a/linphone/mediastreamer2/src/msspeex.c
+++ b/linphone/mediastreamer2/src/msspeex.c
@@ -190,7 +190,7 @@ static void enc_preprocess(MSFilter *f){
 	if (s->maxbitrate>0){
 		/* convert from network bitrate to codec bitrate:*/
 		/* ((nbr/(50*8)) -20-12-8)*50*8*/
-		int cbr=(((float)s->maxbitrate/(50.0*8))-20-12-8)*50*8;
+		int cbr=(int)( (((float)s->maxbitrate/(50.0*8))-20-12-8)*50*8);
 		if (speex_encoder_ctl(s->state,SPEEX_SET_BITRATE,&cbr)!=0){
 			ms_error("Could not set maxbitrate %i to speex encoder.",s->bitrate);
 		}
diff --git a/linphone/mediastreamer2/src/sizeconv.c b/linphone/mediastreamer2/src/sizeconv.c
index 849525cc9..401f2aeb5 100644
--- a/linphone/mediastreamer2/src/sizeconv.c
+++ b/linphone/mediastreamer2/src/sizeconv.c
@@ -118,14 +118,14 @@ static void size_conv_process(MSFilter *f){
 	ms_filter_lock(f);
 
 	if (s->frame_count==-1){
-		s->start_time=f->ticker->time;
+		s->start_time=(float)f->ticker->time;
 		s->frame_count=0;
 	}
 	while((im=ms_queue_get(f->inputs[0]))!=NULL ){
 		putq(&s->rq, im);
 	}
 
-	cur_frame=((f->ticker->time-s->start_time)*s->fps/1000.0);
+	cur_frame=(int)((f->ticker->time-s->start_time)*s->fps/1000.0);
 	if (cur_frame<=s->frame_count && s->fps>=0) {
 		/* too much frame */
 		while(s->rq.q_mcount>1){
diff --git a/linphone/mediastreamer2/src/videodec.c b/linphone/mediastreamer2/src/videodec.c
index 4aea27cdd..c267b4a9b 100644
--- a/linphone/mediastreamer2/src/videodec.c
+++ b/linphone/mediastreamer2/src/videodec.c
@@ -110,7 +110,7 @@ static int dec_add_fmtp(MSFilter *f, void *data){
 		for(i=0,j=0;i<max;i+=2,++j){
 			octet[0]=config[i];
 			octet[1]=config[i+1];
-			s->dci[j]=strtol(octet,NULL,16);
+			s->dci[j]=(uint8_t)strtol(octet,NULL,16);
 		}
 		s->dci_size=j;
 		ms_message("Got mpeg4 config string: %s",config);