[gst-devel] videoscale plugin: how to use?

Tim Müller t.i.m at zen.co.uk
Thu Nov 4 10:41:53 CET 2004

On Thursday 04 November 2004 16:24, Roel Schiphorst wrote:

Hi Roel,

> I am trying to write a simple application using the plugins v4lsrc
> (webcam), videoscale and xvimagesink plugin. When I use the gst-launch
> utility I am able to configure the videoscale plugin:
> gst-launch v4lsrc !  videoscale ! "video/x-raw-yuv",width=320,height=240 !
> xvimagesink
> But how can I configure the videoscale plugin in c-code?  To me, it is a
> very basic question but I haven't found (working) examples in the
> documentation or mailing list to solve my problem.

Probably something along the lines of:

          GstCaps *filtercaps;
          gboolean  ret;

          filtercaps = gst_caps_new_simple ("video/x-raw-yuv",
                                            "width", G_TYPE_INT, 320,
                                            "height", G_TYPE_INT, 240,

          ret = gst_element_link_filtered (videoscale, xvsink, filtercaps);

          gst_caps_free (filtercaps);

          if (ret == FALSE)
               goto error_handling;


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