[gst-devel] GStreamer RTSP Server Multicast RTP Question

[Robert Krakora]

Thanks Wim for adding multicast support to gst-rtsp-server in the tip...

http://github.com/alessandrod/gst-rtsp-server/commit/53f8350b364a6164c0f37f605170d07778719630

On Tue, Mar 2, 2010 at 3:18 PM, Robert Krakora
<rob.krakora at messagenetsystems.com> wrote:
>> ------------------------------
>>
>> Message: 4
>> Date: Tue, 02 Mar 2010 18:46:17 +0100
>> From: Wim Taymans <wim.taymans at gmail.com>
>> Subject: Re: [gst-devel] GStreamer RTSP Server Multicast RTP Question
>> To: Discussion of the development of GStreamer
>>        <gstreamer-devel at lists.sourceforge.net>
>> Cc: Jerry Geis <geisj at messagenetsystems.com>
>> Message-ID: <1267551977.3328.50.camel at metal>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> On Mon, 2010-03-01 at 16:33 -0500, Robert Krakora wrote:
>>> Hello,
>>>
>>> I can successfully capture and send unicast video and audio data from
>>> a v4l2 webcam and microphone via gst-rtsp RTSP server when requested
>>> by an RTSP client.  However, I cannot seem to figure out how to send
>>> multicast video and audio data.  I am using the test-launch example
>>> provided with gst-rtsp in both cases.  However, case (2) below yeilds
>>> nothing when an RTSP client request arrives.  What am I doing wrong?
>>> Thanks in advance.  ;-)
>>>
>>> Case 1 (Unicast)
>>>
>>> /home/silentm/MessageNet/totem/gst-rtsp-0.10.5/examples/test-launch
>>> --gst-debug=255 "( v4l2src device=/dev/video0 ! ffmpegcolorspace !
>>> video/x-raw-yuv,width=640,height=480,framerate=30/1 ! theoraenc
>>> quality=10 bitrate=6000 speed-level=2 ! rtptheorapay pt=96 name=pay0
>>> alsasrc device="hw:0,0" ! audioconvert ! vorbisenc ! rtpvorbispay
>>> pt=97 name=pay1 )"
>>>
>>> Case 2 (Multicast?)
>>>
>>> /home/silentm/MessageNet/totem/gst-rtsp-0.10.5/examples/test-launch
>>> --gst-debug=255 "( gstrtpbin name=rtpbin v4l2src ! ffmpegcolorspace !
>>> theoraenc ! rtptheorapay ! rtpbin.send_rtp_sink_0
>>> rtpbin.send_rtp_src_0 ! udpsink port=5000 host=224.2.8.13
>>> rtpbin.send_rtcp_src_0 ! udpsink port=5001 host=224.2.8.13 sync=false
>>> async=false udpsrc port=5005 ! rtpbin.recv_rtcp_sink_0 alsasrc
>>> device="hw:0,0" ! audioconvert ! vorbisenc ! rtpvorbispay !
>>> rtpbin.send_rtp_sink_1 rtpbin.send_rtp_src_1 ! udpsink port=5002
>>> host=224.2.8.13 rtpbin.send_rtcp_src_1 ! udpsink port=5003
>>> host=224.2.8.13 sync=false async=false  )"
>>
>> This won't work. gst-rtsp-server can only deal with launch lines that
>> end with a payloader. The transport that is then negotiated with the
>> client depends on the client (so if you want multicast, you need a
>> client that asks for multicast). Also currently it's not possible to
>> instruct a resource to be delivered on a multicast address AFAICR.
>>
>> You can however set the mediafactory as 'shared' and then you can
>> connect with multiple clients (over unicast) to watch the stream
>> simultaneously.
>>
>> Wim
>>
>>>
>>> Best Regards,
>>>
>>> --
>>> Rob Krakora
>>> Senior Software Engineer
>>> MessageNet Systems
>>> 101 East Carmel Dr. Suite 105
>>> Carmel, IN 46032
>>> (317)566-1677 Ext. 206
>>> (317)663-0808 Fax
>>> ------------------------------------------------------------------------------
>
> O.K., so is there a way that I can set up the RTSP server to only
> advertise and provide multicast?  Thanks in advance.
>
> Best Regards,
>
> --
> Rob Krakora
> Senior Software Engineer
> MessageNet Systems
> 101 East Carmel Dr. Suite 105
> Carmel, IN 46032
> (317)566-1677 Ext. 206
> (317)663-0808 Fax
>



-- 
Rob Krakora
Senior Software Engineer
MessageNet Systems
101 East Carmel Dr. Suite 105
Carmel, IN 46032
(317)566-1677 Ext. 206
(317)663-0808 Fax