<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:PMingLiU;
panose-1:2 2 3 0 0 0 0 0 0 0;}
@font-face
{font-family:MingLiU;
panose-1:2 2 3 9 0 0 0 0 0 0;}
@font-face
{font-family:MingLiU;
panose-1:2 2 3 9 0 0 0 0 0 0;}
@font-face
{font-family:PMingLiU;
panose-1:2 2 3 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
pre
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:MingLiU;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:Arial;
color:windowtext;}
/* Page Definitions */
@page Section1
{size:595.3pt 841.9pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;
layout-grid:18.0pt;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=ZH-TW link=blue vlink=purple style='text-justify-trim:punctuation'>
<div class=Section1 style='layout-grid:18.0pt'>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>I would like to random access the video, so I send a PAUSE
command and then a PLAY command with a specified time.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>That is like follows.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<pre style='background:white'><font size=1 color=black face=Arial><span
lang=EN-US style='font-size:9.0pt;font-family:Arial;color:black'>PAUSE rtsp://113.31.34.14:554/work/500/115/969/967/500.3gp RTSP/1.0<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>SeqNo: 3<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>Session: 6347526623097789397<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>(==> without range header)<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>...<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>PLAY rtsp://113.31.34.14:554/work/500/115/969/967/500.3gp RTSP/1.0<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>SeqNo: 4<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>Range: npt=12-100 (==> set start play point at the 12<sup>th</sup> second)<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>Session: 6347526623097789397<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>However, I can’t control the network traffic, so I may still receive some old RTP packets after receiving PLAY response.<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>Is there any information to distinguish new RTP packets from out-of-data RTP packets?<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>With the information, I can discard the old RTP packets and play video until receiving the first new RTP packet.<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'>Thx a lot!<o:p></o:p></span></font></pre><pre
style='background:white'><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></pre>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
</div>
</body>
</html>