Index: libmpdemux/demux_asf.c
===================================================================
--- libmpdemux/demux_asf.c	（版本 22434）
+++ libmpdemux/demux_asf.c	（工作副本）
@@ -571,7 +571,6 @@
         } else {
             sh_video=demuxer->video->sh;sh_video->ds=demuxer->video;
             //sh_video->fps=1000.0f; sh_video->frametime=0.001f; // 1ms  - now set when reading asf header
-            //sh_video->i_bps=10*asf->packetsize; // FIXME!
 
             if (asf->asf_is_dvr_ms) {
                 sh_video->bih->biWidth = 0;
Index: libmpdemux/asfheader.c
===================================================================
--- libmpdemux/asfheader.c	（版本 23259）
+++ libmpdemux/asfheader.c	（工作副本）
@@ -70,6 +70,8 @@
   0xdb, 0x06, 0xfa, 0x4c, 0x80, 0x1c, 0x72, 0x12, 0xd3, 0x87, 0x45, 0xe4};
 const char asf_dvr_ms_vid_frame_rep_data[16] = {0xcc, 0x32, 0x64, 0xdd, 
   0x29, 0xe2, 0xdb, 0x40, 0x80, 0xf6, 0xd2, 0x63, 0x28, 0xd2, 0x76, 0x1f};
+const char asf_stream_bitrate[16] = {0xce, 0x75, 0xf8, 0x7b,
+  0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2};
 
 typedef struct {
   // must be 0 for metadata record, might be non-zero for metadata lib record
@@ -198,6 +200,7 @@
   int pos=0;
   uint8_t *buffer = &buf[0];
   uint64_t avg_ft;
+  unsigned bitrate;
 
   while ((pos = find_asf_guid(buf, asf_ext_stream_header, pos, buf_len)) >= 0) {
     int this_stream_num, stnamect, payct, i, objlen;
@@ -213,7 +216,9 @@
     // max-object-size(4),
     // flags(4) (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
 
-    buffer +=8+8+4+4+4+4+4+4+4+4;
+    buffer += 8+8;
+    bitrate = AV_RL32(buffer);
+    buffer += 8*4;
     this_stream_num=AV_RL16(buffer);buffer+=2;
 
     if (this_stream_num == stream_num) {
@@ -222,6 +227,7 @@
       buffer+=2; //skip stream-language-id-index
       avg_ft = AV_RL32(buffer) | (uint64_t)AV_RL32(buffer + 4) << 32; // provided in 100ns units
       buffer+=8;
+      asf->bps = bitrate / 8;
 
       // after this are values for stream-name-count and
       // payload-extension-system-count
@@ -393,6 +399,30 @@
   return 1;
 } 
 
+static unsigned get_bitrate(char *buf, int buf_len, int this_stream_num)
+{
+  int pos = find_asf_guid(buf, asf_stream_bitrate, 0, buf_len);
+  unsigned count, i;
+
+  if (pos < 0)
+    return 0;
+
+  buf += pos;
+  count = AV_RL16(buf);
+  buf += 2;
+
+  for (i = 0; i < count; i++) {
+    unsigned bitrate, flags = AV_RL16(buf);
+    buf += 2;
+    bitrate = AV_RL32(buf);
+    buf += 4;
+    if (flags == this_stream_num) {
+      return bitrate / 8;
+    }
+  }
+  return 0;
+}
+
 static int asf_init_audio_stream(demuxer_t *demuxer,struct asf_priv* asf, sh_audio_t* sh_audio, ASF_stream_header_t *streamh, int *ppos, uint8_t** buf, char *hdr, unsigned int hdr_len)
 {
   uint8_t *buffer = *buf;
@@ -556,6 +586,9 @@
           sh_video->aspect = asp_ratio * sh_video->bih->biWidth /
             sh_video->bih->biHeight;
         }
+	if (asf->bps == 0)
+          asf->bps = get_bitrate(hdr, hdr_len, streamh->stream_no);
+        sh_video->i_bps = asf->bps;
 
         if( mp_msg_test(MSGT_DEMUX,MSGL_V) ) print_video_header(sh_video->bih, MSGL_V);
         //asf_video_id=streamh.stream_no & 0x7F;
Index: libmpdemux/asf.h
===================================================================
--- libmpdemux/asf.h	（版本 23259）
+++ libmpdemux/asf.h	（工作副本）
@@ -241,6 +241,7 @@
     int aud_ext_timing_index;
     int vid_ext_frame_index;
     int know_frame_time;
+    unsigned bps;
 };
 
 #endif