Updating about multicast using vlc

[MariaMaggio]

Hello,
Yestarday I typed this commands on the router:
- Router# conf t
- Router(config)# ip multicast routing
- Router(config)# interface fa 0/0.1
- Router(config-subif)# ip pim dense mode
- Router(config)# interface fa 0/0.2
- Router(config-subif)# ip pim dense mode
- Router(config)# interface fa 0/0.3
- Router(config-subif)# ip pim dense mode

Then I used vlc (http://www.videolan.org) to test multicast network and the stream starts if hosts are in the same vlan.
What's the problem in your opinion?

Regards

[Craefter]

Hi,

You can't really go wrong with dense-mode. I think you used the wizard to set up the multicast stream and the wizard has a problem.

VLC sets the TTL by default to 1 so the multicast stream doesn't pass the current broadcast domain. Seen from your config the stream passes at least one router so you would need at least a TTL of 2.

In the VLC wizard you can set the TTL to whatever value you like but the result will be always 1.

Make a shortcut and use the commandline to set up your stream. Helpful was this website: http://www.faqs.org/docs/Linux-HOWTO/Vi ... HOWTO.html (Works for Windows too)

You can always check your real TTL with the help of ethereal. ;)

-Danny

[dionoea]

uptodate docs are available here : http://Www.videolan.org/doc/

concerning the wizard ttl issue, it has been fixed in the dev version. You can give it a try by using a nightly build (or building it your self)

[MariaMaggio]

Hi danny,
I'm sorry but I don't understand how I can check my real ttl.
What's ethereal?


Hi Antoine,
How I can download update for linux?
In this link http://Www.videolan.org/doc/ I haven't try it.
Moreover where can I give dev version to set TTL?



Thank you very much about your answers.
Maria

[dionoea]

http://vthr.videolan.org/~videolan is where you can get nightly builds

if your OS/distrib isn't available, you'll have to build it yourself : http://developers.videolan.org/vlc/

[MariaMaggio]

Hi Antoine,
there is a problem: I don't know how build it.
I use slackware and I've had many problem to install vlc so I'm afraid to build it.
Isn't there another solution?Can you help me to buil it?

Please have a look to my post about Streaming using command line.

[dionoea]

i unfortunately have no experience with slackware (only debian or gentoo).

What you basically need is to install the packages (those that you need) listed on the http://developers.videolan.org/vlc/ page. (use the latest versions available on those projects' websites ... except ffmpeg where you need to use the cvs version).

Once those are installed, you can download a VLC source code snapshot ( ftp://ftp.videolan.org/pub/videolan/vlc/snapshots/ ). Uncompress it, run ./bootstrap, ./configure with the appropriate options (more info on the developer's website) and make.

If you need more help, post here or join #videolan on irc.videolan.org (Freenode) .

[MariaMaggio]

Sorry Antonie perhaps I have created confusion.
I have istalled vlc but I faced up to many problem to attain my target.
But now vlc works even if It don't stream file between computers in different vlan and don't stream using command line.
Is it clear the problem?

[MariaMaggio]

There's another problem.
Below you can find what appear in the linux shell when the streming is running between host in the same vlan even if all seems ok in the vlc window:

root@multi1:~# vlc
VLC media player 0.8.1 Janus

************ IOD ************
* iod_label:1
* ===========
* tag:0x2
* length:73
* od_id:1
* url flag:0
* includeInlineProfileLevel flag:0
* ODProfileLevelIndication:255
* sceneProfileLevelIndication:255
* audioProfileLevelIndication:254
* visualProfileLevelIndication:254
* graphicsProfileLevelIndication:255
* - ES_Descriptor length:62
* * streamDependenceFlag:0
* * OCRStreamFlag:0
* * streamPriority:31
* - DecoderConfigDesc length:43
* * objectTypeIndication:0x20
* * streamType:0x4
* * upStream:0
* * bufferSizeDB:1048576
* * maxBitrate:2147483647
* * avgBitrate:0
* - SLConfigDescr length:8
* * i_predefined:0x1
*****************************
[00000276] mpeg_audio decoder: MPGA channels:2 samplerate:44100 bitrate:192
[00000280] oss audio output error: cannot open audio device (/dev/dsp)
ALSA lib confmisc.c:550:(snd_determine_driver) could not open control for card 0
ALSA lib conf.c:3463:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
ALSA lib confmisc.c:387:(snd_func_concat) error evaluating strings
ALSA lib conf.c:3463:(_snd_config_evaluate) function snd_func_concat returned error: No such device
ALSA lib confmisc.c:945:(snd_func_refer) error evaluating name
ALSA lib conf.c:3463:(_snd_config_evaluate) function snd_func_refer returned error: No such device
ALSA lib conf.c:3932:(snd_config_expand) Evaluate error: No such device
ALSA lib pcm.c:2068:(snd_pcm_open_noupdate) Unknown PCM default
libdvbpsi error (PSI decoder): TS discontinuity (received 0, expected 10)
libdvbpsi error (PSI decoder): TS discontinuity (received 0, expected 10)

************ IOD ************
* iod_label:1
* ===========
* tag:0x2
* length:73
* od_id:1
* url flag:0
* includeInlineProfileLevel flag:0
* ODProfileLevelIndication:255
* sceneProfileLevelIndication:255
* audioProfileLevelIndication:254
* visualProfileLevelIndication:254
* graphicsProfileLevelIndication:255
* - ES_Descriptor length:62
* * streamDependenceFlag:0
* * OCRStreamFlag:0
* * streamPriority:31
* - DecoderConfigDesc length:43
* * objectTypeIndication:0x20
* * streamType:0x4
* * upStream:0
* * bufferSizeDB:1048576
* * maxBitrate:2147483647
* * avgBitrate:0
* - SLConfigDescr length:8
* * i_predefined:0x1
*****************************


What do you think?