[gst-devel] v4l2src & glupload at only 12 FPS?

[Julien Isorce]

Hi,

And if using gst-launch ? ( v4l2src ! ... ! glupload ! glfilterglass !
glimagesink )

Julien

2010/3/3 Alexandre Quessy <alexandre at quessy.net>

> Hello everyone,
> I have worked on a prototype of a pipeline that uploads a live video
> feed to an OpenGL texture and shares it with a context in SDL,
> starting from the tests/examples/sdlshare.c file in gst-plugins-gl.
> The source code can be found at
> http://bitbucket.org/aalex/toonloop1/src/tip/src/sdlshare.cpp and can
> be compiled with the autotools.
> (./autogen.sh && ./configure && make)
>
> It seems like the mesured framerate is consistently pretty slow. I get
> an average of 12 FPS on a Dual 2.2 GHz with the latest Ubuntu and a
> decent Nvidia graphic card. I obtained 30 FPS on a faster machine with
> a better V4L2-supported video capture card.
>
> Does someone have suggestions on how I could overcome this ? I would
> also prefer to have a framerate that's faster than the capture card's.
> 29.97 FPS is what NTSC gives me, whereas most projectors and monitors
> can do up to 60 FPS. I have tried to set the "sync" property of the
> fakesink element to FALSE, or TRUE, without success. Any other hint ?
>
> --
> Alexandre Quessy
> http://alexandre.quessy.net/
>
>
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