Multiple pipelines in one gst-launch

[Kapil Agrawal]

You can run multiple pipeline in a gstreamer application ,
in you app you need to create different pipeline and set them in playing
state separately. I dont see any issue in doing that ?


On Mon, May 30, 2011 at 9:31 PM, E-J van der Linden <
EJvanderLinden at hetnet.nl> wrote:

> I try to have two pipelines in one gst-launch command.
>
> gst-launch -v alsasrc !
> "audio/x-raw-int,channels=2,rate=44100,depth=32,height=32" ! audioconvert !
> rtpL16pay ! udpsink host=localhost port=8000 \
> udpsrc port=8000 !
> "application/x-rtp,media=audio,clock-rate=44100,channels=2,payload=96" !
> rtpL16depay ! alsasink sync=false
>
> The output is
>
> Setting pipeline to PAUSED ...
> /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0: actual-buffer-time = 200000
> /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0: actual-latency-time = 10000
> /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0.GstPad:src: caps =
> audio/x-raw-int, endianness=(int)1234, signed=(boolean)true, width=(int)32,
> depth=(int)32, rate=(int)44100, channels=(int)2, height=(int)32
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstAudioSrcClock
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps =
> audio/x-raw-int, endianness=(int)1234, signed=(boolean)true, width=(int)32,
> depth=(int)32, rate=(int)44100, channels=(int)2, height=(int)32
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps =
> audio/x-raw-int, endianness=(int)1234, signed=(boolean)true, width=(int)32,
> depth=(int)32, rate=(int)44100, channels=(int)2, height=(int)32
> /GstPipeline:pipeline0/GstAudioConvert:audioconvert0.GstPad:src: caps =
> audio/x-raw-int, endianness=(int)4321, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)44100, channels=(int)2
> /GstPipeline:pipeline0/GstAudioConvert:audioconvert0.GstPad:sink: caps =
> audio/x-raw-int, endianness=(int)1234, signed=(boolean)true, width=(int)32,
> depth=(int)32, rate=(int)44100, channels=(int)2, height=(int)32
> /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0.GstPad:src: caps =
> application/x-rtp, media=(string)audio, clock-rate=(int)44100,
> encoding-name=(string)L16, encoding-params=(string)2, channels=(int)2,
> payload=(int)96, ssrc=(uint)407862357, clock-base=(uint)3043520952,
> seqnum-base=(uint)48790
> /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0.GstPad:sink: caps =
> audio/x-raw-int, endianness=(int)4321, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)44100, channels=(int)2
> /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: timestamp = 3043520952
> /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: seqnum = 48790
> /GstPipeline:pipeline0/GstUDPSink:udpsink0.GstPad:sink: caps =
> application/x-rtp, media=(string)audio, clock-rate=(int)44100,
> encoding-name=(string)L16, encoding-params=(string)2, channels=(int)2,
> payload=(int)96, ssrc=(uint)407862357, clock-base=(uint)3043520952,
> seqnum-base=(uint)48790
>
> I see that the second pipe doesn't run, there isn't sound !!
> When I run two gst-launch commands, there is sound.
>
> The thing is that I want to program the two pipelines in one program and if
> I can't get this to work with gst-launch I think I can't program it...
>
> Ernst-Jan
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>



-- 
www.mediamagictechnologies.com (Gstreamer, ffmpeg, Red5, Streaming)
twitter handle: @gst_kaps
http://www.linkedin.com/in/kapilagrawal
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