Comment 5 for bug 347219

I've made a branch for it: https://code.launchpad.net/~joni-noplu/elisa/deinterlacing_support
This adds a option deinterlace to the PlayableModel, when its True, the video will be deinterlaced.

That helps for my DVB plugin, but if u watch interlaced streams from other sources (like the bug
opener) that dosn't help. Maybe add a button to the player do enable/disable deinterlacing.

Next Gstreamer versions, have deinterlace in playbin2 (see: https://bugzilla.gnome.org/show_bug.cgi?id=547603)
 that makes the code shorter, but the issue to turn it on/off still is there.