diff --git a/DOCS/mplayer.1 b/DOCS/mplayer.1
index 8d7ee668a4..0711bf44fb 100644
--- a/DOCS/mplayer.1
+++ b/DOCS/mplayer.1
@@ -119,8 +119,8 @@ fullscreen.
 MPlayer has an onscreen display (OSD) for status information, nice big
 antialiased shaded subtitles and visual feedback for keyboard controls.
 European/\:ISO 8859-1,2 (Hungarian, English, Czech, etc), Cyrillic and Korean
-fonts are supported along with 9 subtitle formats (MicroDVD, SubRip,
-SubViewer, Sami, VPlayer, RT, SSA, AQTitle and our own: MPsub) and DVD
+fonts are supported along with 10 subtitle formats (MicroDVD, SubRip,
+SubViewer, Sami, VPlayer, RT, SSA, AQTitle, JACOsub and our own: MPsub) and DVD
 subtitles (SPU streams, VobSub and Closed Captions).
 .PP
 .B mencoder
@@ -718,6 +718,11 @@ Convert the given subtitle (specified with the \-sub switch) to the time-based
 SubViewer (SRT) subtitle format.
 Creates a dumpsub.srt file in the current directory.
 .TP
+.B \-dumpjacosub (MPLAYER only)
+Convert the given subtitle (specified with the \-sub switch) to the time-based
+JACOsub subtitle format.
+Creates a dumpsub.js file in the current directory.
+.TP
 .B \-dumpsub (MPLAYER only) (BETA CODE)
 Dumps the subtitle substream from VOB streams.
 See -dump*sub and -vobsubout* options too.
diff --git a/cfg-mplayer.h b/cfg-mplayer.h
index 7299572069..43c81b9338 100644
--- a/cfg-mplayer.h
+++ b/cfg-mplayer.h
@@ -373,6 +373,7 @@ static config_t mplayer_opts[]={
 	{"dumpstream", &stream_dump_type, CONF_TYPE_FLAG, 0, 0, 5, NULL},
 	{"dumpsrtsub", &stream_dump_type, CONF_TYPE_FLAG, 0, 0, 6, NULL},
 	{"dumpmicrodvdsub", &stream_dump_type, CONF_TYPE_FLAG, 0, 0, 7, NULL},
+	{"dumpjacosub", &stream_dump_type, CONF_TYPE_FLAG, 0, 0, 8, NULL},
 
 #ifdef HAVE_LIRC
 	{"lircconf", &lirc_configfile, CONF_TYPE_STRING, CONF_GLOBAL, 0, 0, NULL},
diff --git a/mplayer.c b/mplayer.c
index 38a486d6db..e1138e4e55 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -1198,6 +1198,7 @@ if(sh_video) {
   if(subtitles && stream_dump_type==4) dump_mpsub(subtitles, sh_video->fps);
   if(subtitles && stream_dump_type==6) dump_srt(subtitles, sh_video->fps);
   if(subtitles && stream_dump_type==7) dump_microdvd(subtitles, sh_video->fps);
+  if(subtitles && stream_dump_type==8) dump_jacosub(subtitles, sh_video->fps);
 }
 #endif
 
diff --git a/subreader.c b/subreader.c
index 4d078c2791..3e374c26f9 100644
--- a/subreader.c
+++ b/subreader.c
@@ -1379,6 +1379,55 @@ void dump_microdvd(subtitle* subs, float fps) {
     mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dumpsub.txt\'.\n");
 }
 
+void dump_jacosub(subtitle* subs, float fps) {
+    int i,j;
+    int h,m,s,cs;
+    FILE * fd;
+    subtitle * onesub;
+    unsigned long temp;
+
+    if (!sub_uses_time && sub_fps == 0)
+	sub_fps = fps;
+    fd=fopen("dumpsub.js","w");
+    if(!fd)
+    { 
+	perror("dump_jacosub: fopen");
+	return;
+    }
+    fprintf(fd, "#TIMERES %d\n", (sub_uses_time) ? 100 : (int)sub_fps);    
+    for(i=0;i<sub_num;i++)
+    {
+        onesub=subs+i;    //=&subs[i];
+
+	temp=onesub->start;
+	if (!sub_uses_time)
+	    temp = temp * 100 / sub_fps;
+	temp -= sub_delay * 100;
+	h=temp/360000;temp%=360000;	//h =1*100*60*60
+	m=temp/6000;  temp%=6000;	//m =1*100*60
+	s=temp/100;   temp%=100;	//s =1*100
+	cs=temp;			//cs=1*10
+	fprintf(fd,"%02d:%02d:%02d.%02d ",h,m,s,cs);
+
+	temp=onesub->end;
+	if (!sub_uses_time)
+	    temp = temp * 100 / sub_fps;
+	temp -= sub_delay * 100;
+	h=temp/360000;temp%=360000;
+	m=temp/6000;  temp%=6000;
+	s=temp/100;   temp%=100;
+	cs=temp;
+	fprintf(fd,"%02d:%02d:%02d.%02d {~} ",h,m,s,cs);
+	
+	for(j=0;j<onesub->lines;j++)
+	    fprintf(fd,"%s%s",j ? "\\n" : "", onesub->text[j]);
+
+	fprintf(fd,"\n");
+    }
+    fclose(fd);
+    mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dumpsub.js\'.\n");
+}
+
 void sub_free( subtitle * subs )
 {
  int i;