UDP streaming - Possible to set TOS/DiffServ?

[teo]

Hello,

I'm using VLC to stream several UDP Multicast streams, but I would like to have this traffic prioritized in my switches routers. Is it possible to specify TOS/DiffServ values on the outgoing packets in VLC?

Or is there any other way to make QoS with VLC?


Thanks,
Anders

[teo]

Hello,

I'm using VLC to stream several UDP Multicast streams, but I would like to have this traffic prioritized in my switches routers. Is it possible to specify TOS/DiffServ values on the outgoing packets in VLC?

Or is there any other way to make QoS with VLC?


Thanks,
Anders

I figured out this was not possible, so I wrote a patch to enable this.

[TheIlliterate]

Hi Teo

I read your post in the form that you have beeen able to ome up with a patch that enables the TOS/DSCP options to be set on the VLC player.
Teo I need that patched up player for testing. Can you please share that player with me? I'll be thankfull to you!


Thanks
Regards
TheIllterate

[teo]

Hello,

I sent you a patched VLC installer by email.

Cheers,
Anders

[robertas]

Teo,
I read your post about ToS/DiffServ for VLC - this is exactly what I am was looking for. Can you me a copy of this patched VLC version?



TIA,
Robertas

[teo]

Robertos,

If you pm me your email adress I can mail you a patched VLC 0.8.5 Windows version.

Cheers,
Teo

[Jean-Baptiste Kempf]

Could you send this patch from a up-to-date tree to vlc-devel@vid.... ?

[teo]

Could you send this patch from a up-to-date tree to vlc-devel@vid.... ?

Actually courmish (?) commit'ed an updated network core with the exact same feature I added. So the only thing missing in the SVN is the GUI to set of the parameter and actually setting the value in the stream out module.

My patch handles only setting of this value from the UDP stream out (Which is what I needed), but ofcourse I can send this if it is of interrest.

[rmg]

Hi teo, it would a nice patch. I'd like to try it too.

[flobe]

Is there any new information about DiffServ support in VLC (>= 0.9.4)? I tried to set the DSCP on a UDP stream with the following command line:

vlc.exe --dscp 0x01 "myfile.mp3" :sout=#transcode{acodec=mp4a,ab=32,channels=1}:duplicate{dst=std{access=udp,mux=ts,dst=192.168.6.1:1234}} :ttl=10

Wireshark tells me DSCP is still zero. What is the right command line parameter for setting DSCP?
(using VLC V0.9.4, Windows version).

Thanks in advance,
Flobe.

[flobe]

Is there anybody out there who is capable and willing to give some information, whether the --dscp feature in vlc under Windows is working? I really tried to figure out in the documentation how to influence the DSCP value in UDP paket streams, but so far I failed.

ANY hints appreciated (even if it's RTFD, in case there is some information available I missed).

Regards,
Flobe.

[Rémi Denis-Courmont]

The code is there. Whether it works on Windows is a different matter.

[flobe]

Microsoft Knowledge Base states that IP_TOS sock option is not supported on Windows XP (and newer). So, under Windows the Microsoft GQoS API must be used for that purpose Unfortunately, setting the DSCP value is not straightforward with this API as far is I understand it.

[Rémi Denis-Courmont]

Then it's certainly not going to happen.