Need info on how to set window size for gstremer.

[girish akasapu]

HI,

I have an app, which send samples of video to gstreamer. when the play back starts, gstreamer get the window size automatically based on the source.
But I want to control it.

I tried
videoscale = gst_element_factory_make ("videoscale", "video_scale");
    g_object_set (G_OBJECT (videoscale), "width", 500, NULL);
    g_object_set (G_OBJECT (videoscale), "height", 500, NULL);

but I am getting

• object class 'GstVideoScale' has not property named 'width'
• object class 'GstVideoScale' has not property named 'height'

Need some help here. how do i set the width and height correctly, and is there any way to change the dimensions while the video is playing.

Thanks,
Girish

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[Robert Powell-2]

On Wed, Jul 28, 2010 at 4:10 PM, girish akasapu <[hidden email]> wrote:

I tried
videoscale = gst_element_factory_make ("videoscale", "video_scale");
    g_object_set (G_OBJECT (videoscale), "width", 500, NULL);
    g_object_set (G_OBJECT (videoscale), "height", 500, NULL);

but I am getting

• object class 'GstVideoScale' has not property named 'width'
• object class 'GstVideoScale' has not property named 'height'

Need some help here. how do i set the width and height correctly, and is there any way to change the dimensions while the video is playing.

The 'sink' pad on the videoscale element has caps that can describe the width and height.
 

Hope that helps.

Rob

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[Luciana Fujii Pontello]

On Wed, 2010-07-28 at 16:10 -0700, girish akasapu wrote:

> HI,
>
> I have an app, which send samples of video to gstreamer. when the play
> back starts, gstreamer get the window size automatically based on the
> source.
> But I want to control it.
>
> I tried
> videoscale = gst_element_factory_make ("videoscale", "video_scale");
>     g_object_set (G_OBJECT (videoscale), "width", 500, NULL);
>     g_object_set (G_OBJECT (videoscale), "height", 500, NULL);
>
> but I am getting
>       * object class 'GstVideoScale' has not property named 'width'
>       * object class 'GstVideoScale' has not property named 'height'
> Need some help here. how do i set the width and height correctly, and
> is there any way to change the dimensions while the video is playing.

You can add a capsfilter after videoscale with the correct resolution.
videoscale will resize the video to fit the caps negotiated.

Regards,

Luciana Fujii

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