how to use TCP to stream video captured by my webcam?

Tom fb8fb8 at gmail.com
Thu Jul 28 13:43:16 PDT 2011


Yes I tried, but the following error occured at the client:
gst-launch tcpclientsrc  host=127.0.0.1 port=5106  !  multipartdemux   !
jpegdec  ! autovideosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstTCPClientSrc:tcpclientsrc0:
Internal data flow error.
Additional debug info:
gstbasesrc.c(2507): gst_base_src_loop ():
/GstPipeline:pipeline0/GstTCPClientSrc:tcpclientsrc0:
streaming task paused, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
I really don't know how to deal with this "internal data flow error"...
could please give me some hint?
Thanks you very much!!!

Tom


On Thu, Jul 28, 2011 at 2:51 AM, Sudarshan Bisht
<bisht.sudarshan at gmail.com>wrote:

> Then simply use;
>
> gst-launch-0.10 v4l2src ! videorate ! capsfilter name=vfps
> caps=\"video/x-raw-yuv,framerate=2/1\"  ! ffmpegcolorspace  ! jpegenc !
> multipartmux ! tcpserversink host=127.0.0.1 port=5100
>
>
>
> On Thu, Jul 28, 2011 at 10:45 AM, Tom <fb8fb8 at gmail.com> wrote:
>
>> Thanks for your reply!
>> But I need to keep this  videorate ! capsfilter name=vfps
>> caps=\"video/x-raw-yuv,framerate=2/1\" ! , since I need to change
>> framerate in PLAYING state. I wrote a testpipeline.cpp in which I use the
>> above code to change framerate.
>> So is there other way to fix this problem?
>> Thank you!
>>
>>
>>
>> On Thu, Jul 28, 2011 at 1:47 AM, Sudarshan Bisht <
>> bisht.sudarshan at gmail.com> wrote:
>>
>>> Try this;
>>>
>>> server;
>>> gst-launch v4l2src ! videorate !
>>> 'video/x-raw-yuv,framerate=(fraction)30/1'  ! ffmpegcolorspace  ! jpegenc !
>>> multipartmux ! tcpserversink host=127.0.0.1 port=5100
>>>
>>> Client;
>>> gst-launch tcpclientsrc  port=5100  !  multipartdemux   ! jpegdec  !
>>> autovideosink
>>>
>>> Change host address accordingly as I tried this on signle PC but in two
>>> terminals. I changed framerate too to get better quality.
>>>
>>>
>>>
>>> On Thu, Jul 28, 2011 at 6:56 AM, Tom <fb8fb8 at gmail.com> wrote:
>>>
>>>> Hi All,
>>>>
>>>> I have been trying to stream the video captured from a Linux server to a
>>>> Linux client.
>>>>
>>>> On my server, i run:
>>>> gst-launch v4l2src !  videorate ! capsfilter name=vfps
>>>> caps=\"video/x-raw-yuv,framerate=2/1\" !  multipartmux ! tcpserversink
>>>> host=192.168.2.1 port=5100
>>>>
>>>> On my client, I run:
>>>> gst-launch tcpclientsrc host=xxx.xxx.xxx.xxx(Server IP) port=5100 !
>>>> multipartdemux ! jpegdec ! autovideosink
>>>>
>>>> But it doesn't work. What did i do wrong? Has somebody a solution for
>>>> me? I am new to gstreamer.
>>>> Thank you!
>>>>
>>>> Tom
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> gstreamer-devel at lists.freedesktop.org
>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>
>>>>
>>>
>>>
>>> --
>>> Regards,
>>>
>>> Sudarshan Bisht
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
>>>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>
>
> --
> Regards,
>
> Sudarshan Bisht
>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
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