Re: RTP streaming

uPnP use 239.255.255.250:1900 ( that from IANA so be careful that predefined
IP/port for uPnP only )
Arkady

"aDITYA" <aditya.raut@xxxxxxxxx> wrote in message
news:1154326759.703551.187250@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hey Arkady ,

Can you give me multicast addr & port # you used, what abt TTL value? I
kept them more that what I get on ping.. even tried with TTL=255.

So I think must be problem with multicast addr.

For me unicast is working very well.

Thanks,
- Aditya :o)


Arkady Frenkel wrote:
Muticast work for me in WAN without problems ( that really not me but
UPnP
protocol use it for NOTIFY messaging )
Maybe error return code will help to understand the situation
Arkady

"aDITYA" <aditya.raut@xxxxxxxxx> wrote in message
news:1154071258.061979.81140@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi,

Do you have any idea of multicast over WAN? I tried it but wasn't
working.
I was using 224.0.0,4 & 11000 port #.

Thanks,
- Aditya.
Alexander Nickolov wrote:
The idea of streaming is you don't retransmit and let the
receiver handle it. If you have too much packet loss, streaming
is pointless. You could use TCP instead of UDP (no multicasting,
however) if you want retransmissions. The experiance will be
similarly unbearable for the viewer but this time due to gaps
in time, not gaps in content. Face it - wireless networks are
not suitable for video, except in ideal conditions.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@xxxxxxxx
MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

"aDITYA" <aditya.raut@xxxxxxxxx> wrote in message
news:1153805858.834087.144400@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
That's true. I get no or much lesser lost packets if I use wired
networks.
But I must use wireless (no option) :-o

What I wanted to know is is there any standard method to retransmitt
lost A/V frames??

Is it make sense to implement retransmission for live streaming ie
real
time streaming??

- Aditya
Alexander Nickolov wrote:
Try to fix the underlying problem - eliminate your wireless
network. Or add more (wired) access points - might help,
but I won't hold my breath...

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@xxxxxxxx
MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

"aDITYA" <aditya.raut@xxxxxxxxx> wrote in message
news:1153738526.438730.178510@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi all,


I have RTP streaming application & use WiLan for client to
receive
Multicast UDP packets of audio/video.

I've observed loss of many packets.

Any idea about the standard methods to handle those lost packets.

For now I just continue with whatever data I get, & that causes
Low
Quality audio-video(because of loss of P-Frames for video &
certain
chunks of mp3 audio).

Is it really make sense retransmission for live streaming??


Thanks,
- Aditya :o)






.

Relevant Pages

  • Re: Help with IGMP
    ... the layer 2 protocol to allow switch interfaces to join multcast streams. ... If the multicast source is on a different subnet/VLAN you must also have PIM ... more VOD or other streaming video server. ... crossconnect from that switch to one of the streaming networks. ...
    (comp.dcom.sys.cisco)
  • Re: Multicast check?
    ... >Is there a simple method to check from the server that it is indeed ... >streaming on the IP address and port you specified? ... Are you streaming internally on your LAN, or did you expect multicast ... have access to "Internet 2" and MONE muticast islands near to you). ...
    (microsoft.public.windowsmedia)
  • Re: RTP streaming
    ... So I think must be problem with multicast addr. ... Arkady Frenkel wrote: ... Microsoft MVP, MCSD ... Is it make sense to implement retransmission for live streaming ie real ...
    (microsoft.public.win32.programmer.networks)
  • Re: multicast problem in vls on freebsd 4.10
    ... I can do streaming on IPV4/IPv6 unicast. ... BEGIN "Channels" ... i try to stream multicast videofrom router to vlc ... > Is there a router or switch between the FreeBSD machine and the ...
    (freebsd-net)
  • Re: RTP streaming
    ... Microsoft MVP, MCSD ... Is it make sense to implement retransmission for live streaming ie real ... Multicast UDP packets of audio/video. ...
    (microsoft.public.win32.programmer.networks)