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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Hi all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>I’m new to the live555 library.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>I have a </span></font><font size=2 face="Courier New"><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>MediaServerSession</span></font><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>
with two SubSessions (one for H263 video and the other for G.711 A-law audio), both
SubSessions extend from </span></font><font size=2 face="Courier New"><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>OnDemandServerMediaSubsession</span></font><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>,
the one I use for the video is called</span></font><font size=2
face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>
CH263plusVideoDXServerMediaSubsession </span></font><font size=2 face=Arial><span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>and the other is called </span></font><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New"'>CALawAudioDXServerMediaSubsession. </span></font><font size=2
face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>I have
also two FramedSources one for each SubSession, one called </span></font><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New"'>CH263plusVideoDXFrameSource</span></font><font size=2
face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'> and the
other </span></font><font size=2 face="Courier New"><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>CAlawAudioDXFrameSource.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>The streaming for both medias works perfectly, but
the audio is delayed about 1.5 seconds from the video. To solve this I’ve
tried to delay the video subsession by adding 1500 milliseconds to the </span></font><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New"'>fPresentationTime</span></font><font size=2 face=Arial><span
lang=EN-US style='font-size:10.0pt;font-family:Arial'> attribute in </span></font><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New"'>CH263plusVideoDXServerMediaSubsession::doGetNextFrame</span></font><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>
method, however no change was perceived. So I started googling this problem, until
I reached to the question “Why do most RTP sessions use separate streams
for audio and video? How can a receiving client synchronize these streams?“
from FAQs.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>The problem is that I don’t know where I should
create the instance for </span></font><font size=2 face="Courier New"><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>RTCPInstance</span></font><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>
class, and there’s no variable or field where I can store it. I looked in
the </span></font><font size=2 face="Courier New"><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>OnDemandServerMediaSubsession
</span></font><font size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;
font-family:Arial'>and</span></font><font size=2 face="Courier New"><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> FramedSource </span></font><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>class.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Is there any way to delay the video streaming without
using the </span></font><font size=2 face="Courier New"><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>RTCPInstance</span></font><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>,
if not, where I should create it and where I should store it</span></font><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New"'>?</span></font><font size=2 face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>If you need anything else, please ask for it.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Diego<o:p></o:p></span></font></p>
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