Streaming webcam using rtsp protocol

charlie at sensoray.com charlie at sensoray.com
Wed Jul 25 10:16:59 PDT 2012


If you expect low CPU usage and low latency, you better go with
jpegenc/jpegdec. Refer to:
http://gstreamer-devel.966125.n4.nabble.com/streaming-mpeg4-over-tcp-td3850542.html,
and Charlie X. Liu's reply section, for the details.

Best regards,

Charlie X. Liu, Ph.D


> Hi,
>
> Thanks for your replay, that was the problem, I have one more question,
> I tested this on the same PC, but I'm getting 3-4s delay, is it possible
> to reduce this delay, I tried to change the size(width, height) but
> still the same delay, for me the quality is not that important as the
> speed. Is it possible to reduce this delay?
>
> Regards,
> Robert
>
> On 07/25/2012 05:49 PM, Daniel Díaz wrote:
>> Hello!
>>
>>
>> On Wed, Jul 25, 2012 at 9:22 AM, Róbert Ungurán <unguranr at gmail.com>
>> wrote:
>>> Hi,
>>> I'm trying to stream my webcam using rtsp protocol, but when I would
>>> like to
>>> display the stream using vlc I'm receivin one or two frames and after
>>> that
>>> I'm getting the following error messages:
>>> vlc rtsp://localhost:8554/test
>> [...]
>>> This is the code of the server:
>> [...]
>>>    gst_rtsp_media_factory_set_launch (factory, "( "
>>>            "v4l2src device=/dev/video0 !
>>> video/x-raw-yuv,width=320,height=240,framerate=30/1 ! "
>>>            "x264enc ! queue ! rtph264pay name=pay0 pt=96 ! audiotestsrc
>>> !
>>> audio/x-raw-int,rate=8000 ! alawenc ! rtppcmapay name=pay1 pt=97 "")");
>> [...]
>>> Where did I make the mistake(s)?
>> I don't know about the rest, as I get good results with
>> gst-rtsp-server's test-launch example, but this pipeline looks wrongly
>> linked:
>>    [...] ! rtph264pay name=pay0 pt=96 ! audiotestsrc !
>> audio/x-raw-int,rate=8000 ! [...]
>> should be:
>>    [...] ! rtph264pay name=pay0 pt=96 audiotestsrc !
>> audio/x-raw-int,rate=8000 ! [...]
>> with no exclamation mark before audiotestsrc.
>>
>> Greetings!
>>
>> Daniel Díaz
>> yosoy at danieldiaz.org
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
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