PTS is out of range

[jack]

I'm trying to distribute 2 kinds of content: live mjpeg images from an Axis netcam and trailers(.mpg or .mov).
I want to do it in a wireless LAN: the server takes live stream from Axis and it makes a multicast transmission while clients ask for trailers (in the webpage of the server) with http link.
But when the trailer is being displayed, the image is blocked and the messages are:

PTS is out of range(1615120)dropping the buffer

What can I do?Thanks a lot for your interest

[jack]

I would say that all machines have Win OSes, Xitami as webserver and they talk with each other through wireless bridges(SMC).
One bridge is the bottleneck of the net because every client has to pass through it; anyway it seems to me that the bandwidth is enough!
Obviously if I turn off the live multicast, VoD through http is perfect!
Thanks in advance

[jack]

Come on guys

I think it could be a problem of udp protocol:also with a wired link there is eccessive lost of packets with multicast.
Isn't there someone who can say something about it?Thanks a lot

[7andy]

I'm also getting loads of these PTS errors when I stream from PC#1 to PC#2. Interestingly, if I stream the other way - PC#2 to PC#1, it is perfect! I can ramp up MPEG2 to max bitrate, and it still only uses less than 40% of my 100Mb LAN. PC#1 to PC#2 - if I use more than 128 bits/sec (!) it falls over. I suspect this is tied to the NICs, but how to cure it? - I have no idea!!!

BTW, PC#1 uses a VIA Rhine II NIC and PC#2 is a good ol' Realtek 8139

Oh - and Windows XP SP2, AMD 2100+/AMD 2000+ and VideoLAN 0.8.1 both ends.

Cheers, 7&Y

[ZerBit]

Hi,

There are several things to test. First of all is download DRTCP021.exe to get actual network params and set both with the same params (MTU, TCPReceiveWindow and TTL). The correct params are related to your network components, MTU is normally 1500 in LANs and TTL is the number of jumps that packets can do.

PTS.-Presentation TimeStamp, search in this group or in google what does it mean!!

Regards

[7andy]

... a bit more info on this. On the PC which doesn't seem to be able to send the video quick enough, I changed the NIC for a Realtek 8139 and disabled the on-board one. The problem is still there, so I think it must be related to some settings within Windows. If I send from the PC that is OK, I can even receive the stream on my Netgem box by the TV! I have spotted some QoS settings in XP, so I will experiment with these next...

Cheers, 7&Y

PS Dr TCP confirmed that I am using the best settings for both my PCs.