gstreamer throughput is okay then slows down

[John Buckley]

Hello,

I noticed last night that immediately following a fresh bootup the when using gst-launch the initial throughput looks okay (maybe 250ms delay).  This I can work with and try to improve.

 

However, as time goes by the delay becomes greater and greater and reaches as high as 10seconds eventually.  <ctrl-c> and re-issuing the gst-launch command does not clear the delay.

 

Here is my gst-launch command:

#gst-launch v4l2src ! image/jpeg,width=320,framerate=\(fraction\)30/1 ! ffdec_mjpeg ! ffmpegcolorspace ! ximagesink sync=false

     or

#gst-launch v4l2src ! image/jpeg,width=320,framerate=\(fraction\)30/1 ! jpegdec ! ffmpegcolorspace ! ximagesink sync=false

 

Any ideas on how I can maintain the initial bootup performance and try to improve on that instead of having it go the other way?

 

John Buckley

 

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[Jan Schmidt-6]

On Thu, 2009-11-12 at 14:22 +0000, John Buckley wrote:

> Hello,
>
> I noticed last night that immediately following a fresh bootup the
> when using gst-launch the initial throughput looks okay (maybe 250ms
> delay).  This I can work with and try to improve.
>
>  
>
> However, as time goes by the delay becomes greater and greater and
> reaches as high as 10seconds eventually.  <ctrl-c> and re-issuing the
> gst-launch command does not clear the delay.

   ^^^ This is a very strong hint that the problem is in the video
driver in the kernel, and not anything to do with GStreamer....

J.

>
>  
>
> Here is my gst-launch command:
>
> #gst-launch v4l2src ! image/jpeg,width=320,framerate=\(fraction
> \)30/1 ! ffdec_mjpeg ! ffmpegcolorspace ! ximagesink sync=false
>
>      or
>
> #gst-launch v4l2src ! image/jpeg,width=320,framerate=\(fraction
> \)30/1 ! jpegdec ! ffmpegcolorspace ! ximagesink sync=false
>
>  
>
> Any ideas on how I can maintain the initial bootup performance and try
> to improve on that instead of having it go the other way?
>
>  
>
> John Buckley
>
>  
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

--
Jan Schmidt <[hidden email]>


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