Thanks <font><font color="#888888"><span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium">Ross Finlayson<br>
<br>My problem has been solve.<br></span></span></font></font><br><div class="gmail_quote">On Sun, Oct 2, 2011 at 9:29 AM, Ross Finlayson <span dir="ltr"><<a href="mailto:finlayson@live555.com">finlayson@live555.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word"><div class="im"><div><blockquote type="cite">I use live555 to record a mediastream by following command:<br>
<br><i>testProgs/openRTSP.exe -d 10 -4 rtsp://<a href="http://192.168.1.174:5544/" target="_blank">192.168.1.174:5544</a> >live555.mp4</i><br>

<br>But when mp4 file is created, the video is much more slow than 
audio</blockquote><div><br></div></div></div>The problem here is that you must specify the video frame rate - and the video width & height - on the "openRTSP" command line, using the -f, -w and -h options.  Unfortunately the "mp4" file format (which is rather ill-designed for recording a live stream like this) requires that these parameters be specified in advance.<div>
<br></div><div>See <a href="http://www.live555.com/openRTSP/#quicktime" target="_blank">http://www.live555.com/openRTSP/#quicktime</a></div><br><font color="#888888"><br><div>
<span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium">Ross Finlayson<br>
Live Networks, Inc.<br><a href="http://www.live555.com/" target="_blank">http://www.live555.com/</a></span></span>
</div>
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<br></blockquote></div><br>