Exact Mapping in mix options does the video mapper thing. It's been in Catalyst for ages. I've done load of shows with it.
I find Hippo's Video Mapper rather limited by comparison - as you can use a combination of Exact mapping and transparent mix windows to amazing effect.
As for the frame blending effect then look no further than the FX Editor - again this has been in there for ages. If you click on the layer number in your layers hud you have the option of doing super slo mo too.
Hugh
