[Bug 797333] New: videoscale cannot change interpolation method

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797333

            Bug ID: 797333
           Summary: videoscale cannot change interpolation method
    Classification: Platform
           Product: GStreamer
           Version: 1.x
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: Wilfried.Philips at wphilips.eu
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 374032
  --> https://bugzilla.gnome.org/attachment.cgi?id=374032&action=edit
example code in python

In a python demo program, I wish to demonstrate various interpolation methods
on low resolution video using menu commands and/or keypresses. This requires
changing the interpolation method. For this I use calls like 
self.videoscale.set_property("method", 'nearest-neighbour')
They seem to have not effect whatsoever. The property seems to be set properly 
(can be read back using get_property) but is otherwise ignored.

This code was written a long time ago and I think it worked under an older
version of gstreamer/pygi (not sure which one; this was many years ago)

Code is attached. Use the menus to change between methods.

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