diff --git a/demux_asf.c b/demux_asf.c
index e7550a5695..76373461ab 100644
--- a/demux_asf.c
+++ b/demux_asf.c
@@ -58,7 +58,7 @@ static void asf_descrambling(unsigned char *src,int len){
 }
 
 
-static int demux_asf_read_packet(demuxer_t *demux,unsigned char *data,int len,int id,int seq,unsigned long time,unsigned short dur,int offs){
+static int demux_asf_read_packet(demuxer_t *demux,unsigned char *data,int len,int id,int seq,unsigned long time,unsigned short dur,int offs,int keyframe){
   demux_stream_t *ds=NULL;
   
   if(verbose>=4) printf("demux_asf.read_packet: id=%d seq=%d len=%d\n",id,seq,len);
@@ -118,6 +118,7 @@ static int demux_asf_read_packet(demuxer_t *demux,unsigned char *data,int len,in
       dp=new_demux_packet(len);
       memcpy(dp->buffer,data,len);
       dp->pts=time*0.001f;
+      dp->flags=keyframe;
 //      if(ds==demux->video) printf("ASF time: %8d  dur: %5d  \n",time,dur);
       dp->pos=demux->filepos;
       ds->asf_packet=dp;
@@ -207,6 +208,7 @@ int demux_asf_fill_buffer(demuxer_t *demux){
               unsigned long x;
               unsigned char type;
               unsigned long time2;
+	      int keyframe=0;
 
               if(p>=p_end) printf("Warning! invalid packet 1, sig11 coming soon...\n");
 
@@ -218,6 +220,7 @@ int demux_asf_fill_buffer(demuxer_t *demux){
               }
               
               streamno=p[0]&0x7F;
+	      if(p[0]&0x80) keyframe=1;
               seq=p[1];
               p+=2;
 
@@ -279,7 +282,7 @@ int demux_asf_fill_buffer(demuxer_t *demux){
 		  int len2=p[0];
 		  p++;
                   //printf("  group part: %d bytes\n",len2);
-                  demux_asf_read_packet(demux,p,len2,streamno,seq,x,duration,-1);
+                  demux_asf_read_packet(demux,p,len2,streamno,seq,x,duration,-1,keyframe);
                   p+=len2;
 		  len-=len2+1;
 		}
@@ -290,7 +293,7 @@ int demux_asf_fill_buffer(demuxer_t *demux){
               case 0x08:
                 // NO GROUPING:
                 //printf("fragment offset: %d  \n",sh->x);
-                demux_asf_read_packet(demux,p,len,streamno,seq,time2,duration,x);
+                demux_asf_read_packet(demux,p,len,streamno,seq,time2,duration,x,keyframe);
                 p+=len;
                 break;
 	      }
diff --git a/demux_avi.c b/demux_avi.c
index 664a3f000f..c3ea043bbc 100644
--- a/demux_avi.c
+++ b/demux_avi.c
@@ -57,7 +57,7 @@ demux_stream_t* demux_avi_select_stream(demuxer_t *demux,unsigned int id){
   return NULL;
 }
 
-static int demux_avi_read_packet(demuxer_t *demux,unsigned int id,unsigned int len,int idxpos){
+static int demux_avi_read_packet(demuxer_t *demux,unsigned int id,unsigned int len,int idxpos,int flags){
   int skip;
   float pts=0;
   demux_stream_t *ds=demux_avi_select_stream(demux,id);
@@ -92,7 +92,7 @@ static int demux_avi_read_packet(demuxer_t *demux,unsigned int id,unsigned int l
   
   if(ds){
     if(verbose>=2) printf("DEMUX_AVI: Read %d data bytes from packet %04X\n",len,id);
-    ds_read_packet(ds,demux->stream,len,pts,idxpos);
+    ds_read_packet(ds,demux->stream,len,pts,idxpos,flags);
     skip-=len;
   }
   if(skip){
@@ -115,6 +115,7 @@ int max_packs=128;
 int ret=0;
 
 do{
+  int flags=0;
   AVIINDEXENTRY *idx=NULL;
   demux->filepos=stream_tell(demux->stream);
   if(demux->filepos>=demux->movi_end){
@@ -166,6 +167,7 @@ do{
       printf("ChunkSize mismatch! raw=%d idx=%ld  \n",len,idx->dwChunkLength);
       continue;
     }
+    if(idx->dwFlags&AVIIF_KEYFRAME) flags=1;
   } else {
     id=stream_read_dword_le(demux->stream);
     len=stream_read_dword_le(demux->stream);
@@ -174,7 +176,7 @@ do{
       continue;
     }
   }
-  ret=demux_avi_read_packet(demux,id,len,demux->idx_pos-1);
+  ret=demux_avi_read_packet(demux,id,len,demux->idx_pos-1,flags);
       if(!ret && skip_video_frames<=0)
         if(--max_packs==0){
           demux->stream->eof=1;
@@ -196,6 +198,7 @@ int max_packs=128;
 int ret=0;
 
 do{
+  int flags=0;
   AVIINDEXENTRY *idx=NULL;
   int idx_pos=0;
   demux->filepos=stream_tell(demux->stream);
@@ -245,8 +248,9 @@ do{
       printf("ChunkSize mismatch! raw=%d idx=%ld  \n",len,idx->dwChunkLength);
       continue;
     }
+    if(idx->dwFlags&AVIIF_KEYFRAME) flags=1;
   } else return 0;
-  ret=demux_avi_read_packet(demux,id,len,idx_pos);
+  ret=demux_avi_read_packet(demux,id,len,idx_pos,flags);
       if(!ret && skip_video_frames<=0)
         if(--max_packs==0){
           demux->stream->eof=1;
@@ -291,7 +295,7 @@ do{
   
   if(ds==demux_avi_select_stream(demux,id)){
     // read it!
-    ret=demux_avi_read_packet(demux,id,len,demux->idx_pos-1);
+    ret=demux_avi_read_packet(demux,id,len,demux->idx_pos-1,0);
   } else {
     // skip it!
     int skip=(len+1)&(~1); // total bytes in this chunk
diff --git a/demux_mpg.c b/demux_mpg.c
index 6ebebe65ce..f9b8b425c6 100644
--- a/demux_mpg.c
+++ b/demux_mpg.c
@@ -238,7 +238,7 @@ static int demux_mpg_read_packet(demuxer_t *demux,int id){
 		    printf("Encrypted stream but authentication was not requested by you!!\n");
     }
 #endif
-    ds_read_packet(ds,demux->stream,len,pts/90000.0f,0);
+    ds_read_packet(ds,demux->stream,len,pts/90000.0f,0,0);
 //    if(ds==demux->sub) parse_dvdsub(ds->last->buffer,ds->last->len);
     return 1;
   }
@@ -255,7 +255,7 @@ int demux_mpg_es_fill_buffer(demuxer_t *demux){
   // Elementary video stream
   if(demux->stream->eof) return 0;
   demux->filepos=stream_tell(demux->stream);
-  ds_read_packet(demux->video,demux->stream,STREAM_BUFFER_SIZE,0,0);
+  ds_read_packet(demux->video,demux->stream,STREAM_BUFFER_SIZE,0,0,0);
   return 1;
 }
 
diff --git a/demuxer.c b/demuxer.c
index 3aba153875..dc41c6d2df 100644
--- a/demuxer.c
+++ b/demuxer.c
@@ -70,11 +70,12 @@ void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp){
         dp->len,dp->pts,dp->pos,ds->demuxer->audio->packs,ds->demuxer->video->packs);
 }
 
-void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,int pos){
+void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,int pos,int flags){
     demux_packet_t* dp=new_demux_packet(len);
     stream_read(stream,dp->buffer,len);
     dp->pts=pts; //(float)pts/90000.0f;
     dp->pos=pos;
+    dp->flags=flags;
     // append packet to DS stream:
     ds_add_packet(ds,dp);
 }
@@ -128,6 +129,7 @@ int ds_fill_buffer(demux_stream_t *ds){
         ds->pts_bytes=0;
       }
       ds->pts_bytes+=p->len; // !!!
+      ds->flags=p->flags;
       // free packet:
       ds->bytes-=p->len;
       ds->first=p->next;
diff --git a/demuxer.h b/demuxer.h
index 575bffc384..0acf059646 100644
--- a/demuxer.h
+++ b/demuxer.h
@@ -21,6 +21,7 @@ typedef struct demux_packet_st {
   float pts;
   int pos;  // pozicio indexben (AVI) ill. fileban (MPG)
   unsigned char* buffer;
+  int flags; // keyframe, etc
   struct demux_packet_st* next;
 } demux_packet_t;
 
@@ -34,6 +35,7 @@ typedef struct {
   int pos;                 // position in the input stream (file)
   int dpos;                // position in the demuxed stream
   int pack_no;		   // serial number of packet
+  int flags;               // flags of current packet (keyframe etc)
 //---------------
   int packs;              // number of packets in buffer
   int bytes;              // total bytes of packets in buffer
@@ -87,6 +89,7 @@ inline static demux_packet_t* new_demux_packet(int len){
   dp->next=NULL;
   dp->pts=0;
   dp->pos=0;
+  dp->flags=0;
   return dp;
 }
 
@@ -99,7 +102,7 @@ demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id);
 demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id);
 
 void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp);
-void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,int pos);
+void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,int pos,int flags);
 
 int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds);
 int ds_fill_buffer(demux_stream_t *ds);
diff --git a/mplayer.c b/mplayer.c
index b561623237..f287902de0 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -1611,6 +1611,8 @@ switch(sh_video->codec->driver){
     if(in_size<0){ eof=1;break;}
     if(in_size>max_framesize) max_framesize=in_size;
 
+    if(d_video->flags) if(verbose) printf("***keyframe***\n");
+
     if(drop_frame<2) DS_VideoDecoder_DecodeFrame(start, in_size, 0, !drop_frame);
     current_module="draw_frame";
 
@@ -1641,6 +1643,8 @@ switch(sh_video->codec->driver){
     if(in_size<0){ eof=1;break;}
     if(in_size>max_framesize) max_framesize=in_size;
     
+    if(d_video->flags) if(verbose) printf("***keyframe***\n");
+    
     if(in_size){
       sh_video->bih->biSizeImage = in_size;