glcolorscale problem with resizing

[Hamdi Rakkez]

​​
I've tried already with *capsfilter* and I still have black frames.

The pipeline with capsfilter is :

gst-launch-1.0 videotestsrc num-buffers=500 !
video/x-raw,format=RGBA,width=828,height=544 ! glupload ! glcolorscale !
capsfilter
caps="video/x-raw(memory:GLMemory),format=RGBA,width=800,height=600" !
gldownload ! glimagesink

On Thu, Oct 1, 2015 at 12:22 PM, Matthew Waters <ystreet00 at gmail.com> wrote:

> On 01/10/15 20:00, Hamdi Rakkez wrote:
>
> Hi list,
>
> I am using gstreamer-1.5.90 on ubuntu14.04.
>
> So here's the pipeline which intend to resize a video stream :
>
> gst-launch-1.0 videotestsrc num-buffers=500 !
> video/x-raw,format=RGBA,width=828,height=544 ! glupload ! glcolorscale !
> capssetter caps="video/x-raw,format=RGBA,width=800,height=600" !
> gldownload ! glimagesink
>
>
> capssetter is definitely not what you want here.  Try a capsfilter
> instead.  capssetter will simply override the caps between the elements
> where a capsfilter will make them negotiate to the requested caps.
>
> Cheers
> -Matt
>
> The problem is with *glcolorscale* along with the *capssetter* : If I put
> *width* and *height* other then the original ones (828 X 544 ) I get
> black frames.
>
> PS :
>
>    - The API which my gstreamer uses is OpenGL
>    - When preserving the same resolution I get the normal video stream.
>
> Best Regards,
> Hamdi
>
>
>
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