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</o:shapelayout></xml><![endif]--></head><body lang=CS link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>have noted similar issues, but not sure if same. I just guess you mean that doing diagnostic problem after sending stream over Gigabit network using UDP. Right?<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I recommend to make dump using wireshark. Then check what are time distances between packets of one stream. When see that those are short sequences where packets are about about 10useconds far and than pause for mseconds (in one channel stream), then I can say you have met bursting issue. This will cause loose of packets for VLC. But problem is not caused by VLC or dvblast, but issue is in switch which drops some packets. It has workaround using QoS/shaper on streamer. There is couple of sources over internet about it. Have verified it already, it is real issue… <o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If this is TCP , forget this above… ;-)<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Comments welcomed.<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> dvblast-devel-bounces@videolan.org [mailto:dvblast-devel-bounces@videolan.org] <b><span style='font-weight:bold'>On Behalf Of </span></b>Armin Zeid<br><b><span style='font-weight:bold'>Sent:</span></b> Monday, March 05, 2012 10:22 PM<br><b><span style='font-weight:bold'>To:</span></b> Mailing list for DVBlast developers<br><b><span style='font-weight:bold'>Subject:</span></b> [dvblast-devel] Multiple Stream Issue<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Hello,<br><br>I'm experiencing pixelation and jitter when streaming multiple (4 in my case) channels from one transponder in the same config file when running one instance of dvblast. <br><br>This doesn't seem to be a network throughput issue since there are no problems when I stream the same number of channels from 4 separate instances of dvblast running using four different dvbs interfaces.<br><br>This leads me to think that this is either an application or OS level problem.<br><br>I'm running dvblast 2.1 on ubuntu 10.10 and have done tcp/ip tuning on the Ubuntu machine. My dvblast command is:<br>sudo dvblast -a 1 -f [freq] -s [pol] -v 18 -S 2 -i 1 -c channel.config<br><br>So if i put multiple channels in the config file, I get jittering. If I put 1 channel in each config file and run separate instances of dvblast, there are no problems.<br><br>Has anyone experienced similar problem or have any suggestions?<br><br>Thanks<o:p></o:p></span></font></p></div></body></html>