[gst-devel] Re : Help with RTP

Thu Aug 7 17:14:30 CEST 2008

Thanks.

With this server, can I stream from dvb source for instance ?

In fact, I am in an internship and the program I have to write must 
exchange SIP message for the commands. So my question is: can I interact 
easily with Darwin from my C program ? with a plugin ?

Thanks again !

Rémi

Aurelien Grimaud wrote:
> Hi, I think you need a server here to handle the negotiations (sdp 
> exchange).
> Then, you can use RTCP sent by client to detect network congestion.
>
> Darwin streaming server is a rtsp server and may be a good start to 
> handle rtsp.
> It also supports easy plugin writting, in which you can alter your 
> stream the way you want, without re-writting a rtsp stack from scratch.
>
> Aurelien
>
> ----- Message d'origine ----
> De : Rémi BUISSON <remi.buisson at viotech.net>
> À : Daiane Angolini <daiane.angolini at freescale.com>
> Cc : Discussion of the development of GStreamer 
> <gstreamer-devel at lists.sourceforge.net>
> Envoyé le : Jeudi, 7 Août 2008, 8h37mn 59s
> Objet : Re: [gst-devel] Help with RTP
>
> Hi and thanks for your reply !
>
> OK I will try today and I will tell you if it works for me.
>
> My goal is to write a streaming server which can transcode, transrate,
> ... a stream and using a file for clients may be some kind of a
> do-it-yourself solution.
>
> For instance, the client send a message to the server for starting the
> streaming of a file. Next, imagine the network is overloaded. Then, the
> client will ask to the server to decrease the bitrate of the stream.
>
> The client may be VLC, MPlayer, ...
>
> Have you any idea to do it ?
>
> I think it's possible because the streams are standardized.
> Moreover, I tried to read a video streamed by flumotion over HTTP and it
> works perfectly with VLC.
>
> Thanks again.
>
> Daiane Angolini wrote:
> > Hello Remi!
> >
> > If you want to see streaming using VLC you can use a SDP file.
> >
> > Try this:
> >
> >
> > *v=0*
> > *o=- 37 614155991 IN IP4 127.0.0.0*
> > *s=QuickTime*
> > *t=0 0*
> > *a=range:npt=now-*
> > *m=audio 5432 RTP/AVP 0*
> > *c=IN IP4 10.29.241.6*
> > *b=AS:63*
> > *m=video 5434 RTP/AVP 96*
> > *c=IN IP4 10.29.241.6*
> > *a=rtpmap:96 H263-2000/90000*
> > *a=fmtp:96  *
> > *a=cliprect:0,0,144,176*
> > *a=framesize:96 176-144*
> >
> > In this file you have both audio and video.
> > But if you need a simple one, you can try this:
> >
> > *v=0*
> > *m=video 5434 RTP/AVP 96*
> > *c=IN IP4 10.29.240.186*
> > *a=rtpmap:96 MP4V-ES/90000  *
> > *a=fmtp:96
> > 
> config=000001b002000001b59113000001000000012000c488800f50584121443f;profile-level-id=2*
> >
> > The *config* and *profile-level-id* you can get from the return value
> > of *gst-lauch -v* command. In the caps property.
> >
> > Ah!
> > To use VLC with SDP file use:
> >
> > vlc -vvv file.sdp
> >
> > I hope it works
> >
> >
> > Daiane
> >
> >
> >
> >
> > On Wed, 2008-08-06 at 16:21 +0200, Rémi BUISSON wrote:
> >> Hi everyone,
> >>
> >> I have some troubles streaming video file over the network.
> >>
> >> First of all, I tired this :
> >>
> >> server:
> >> gst-launch filesrc location=../partage/Videos/superman_originale.avi !
> >> decodebin ! x264enc ! video/x-h264 ! rtph264pay pt=96 ! udpsink
> >> host=192.168.1.2 port=5000 sync=false
> >>
> >> client:
> >> gst-launch udpsrc port=5000 ! rtph264depay  ! decodebin ! xvimagesink
> >>
> >> It works but I can't read it with vlc : vlc udp://@:5000 : is it 
> normal ?
> >>
> >> Now I would like to do the same thing with an RTP pipeline :
> >>
> >> server:
> >> gst-launch filesrc location=../partage/Videos/superman_originale.avi !
> >> decodebin ! x264enc ! rtph264pay ! rtpbin localport=5001
> >> destinations=127.0.0.1:5000
> >>
> >> client:
> >> gst-launch udpsrc port=5000 ! rtph264depay ! decodebin ! 
> xvimagesink -->
> >> this works
> >> gst-launch rtpbin localport=5000 ! rtph264depay ! decodebin !
> >> xvimagesink --> this doesn't work
> >>
> >> How can I receive my stream ? with vlc ?
> >>
> >> Thanks in advance !
> >>
> >> 
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