Hi,<br><br>I am trying to stream multicast videos through a hybrid
wireless-wired network and I am having some problems at wireless
clients. I have checked with differents devices and even with different
networks (laboratory and home), but the results are the same: "<span style="font-weight: bold;">ts warning: discontinuity received 0xX instead of 0xX (pid = 68 or 69)</span>" messages, so having some video and audio interruptions and poor frame decoding results.<br>
<br>I
stream from a VLC server (through VLM, VLC 0.8.6d), Ubuntu Linux 32
bits based, running in a laptop. It serves RTSP VOD videos and UDP
multicast, both configured with VLM telnet interface. It streams via
802.11g at 54 Mbps to a Cisco Aironet 1200 series access point,
connected to a switch with many other computers. Then I have two
clients: a desktop and a laptop. The desktop is wired and it receives
both VOD and the multicast streams perfectly, but the laptop, connected
to the network with 802.11g receives VOD with no problems but the
multicast stream with many discontinuity errors. If I connect the
laptop to the wired network the multicast streams are received with no
problems.<br><br>I configure the scheduled multicast streaming:<br><br>> new test broadcast enabled<br>> setup test input /media/sda2/diptv/server/contents/test.mpg<br>> setup test output #standard{mux=ts,access=udp,dst=<a href="http://239.255.1.5:60101">239.255.1.5:60101</a>}<br>
> new test_tv schedule enabled<br>> setup test_tv date 2008/02/28-14:50:00<br>> setup test_tv append control test play<br><br>I
have tried with different videos, different wireless receivers,
different 802.11g channels and transmission rates (and many other
access point features), streaming from a wired and wireless server,
with a WIFI Conceptronic router or a D-Link DWL700 access point instead
the Cisco Aironet 1200 and receiving in a Linux or WinXP client with
the same results, the raw of discontinuity errors at receiver. I have
also tried increasing the buffer size of VLC for UDP muxer with no
effect.<br><br>I have launched Wireshark protocol analyzer to track the
udp packets on the wired desktop and on the wireless laptop and the
difference are some random missing packets on the wireless laptop
network interface, obvious losses. <br><br><span style="font-weight: bold;">So what I would like to
know is if somebody has faced this problem with multicast streaming in a wireless environment and, if it has been finally solved, how to do it. If the solution is a different access point I would like to know which ones have worked properly with this issue.</span><br>
<br><br>Thanks a lot.