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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>We needed something similar, and I ended
up using Lego NXT sensors, and wrote a gstlego element.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The idea is that you emit a light at time0
into a camera, and then you use another sensor to sense the light at time1 on
the screen. The accuracy was about +/- 2ms, so if you can live with that, I recommend
this approach, since it is both cheap and fun! </span></font><font size=2
color=navy face=Wingdings><span style='font-size:10.0pt;font-family:Wingdings;
color:navy'>J</span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> liangzhihong1984
[mailto:liangzhihong1984@126.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 27. februar 2009 09:14<br>
<b><span style='font-weight:bold'>To:</span></b>
gstreamer-devel@lists.sourceforge.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> [gst-devel] How to
measure the delay with GStreamer?</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'>I
was working on a video conferencing project, and want to get the exact delay
form when it was grabbed through the 1394 firewire to being displayed on the
screen of another PC in LAN.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'>Any
clue about how to implement this?<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'>Thank
you in advance.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'>Best
Regards, <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'>Leon
Liang<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'><a
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