How can I combine whiteboard animation, stop motion and live video without massive import/export and adjustments? I have watched videos from AsapSCIENCE. These videos combine stop motion, whiteboard board animation (drawing effects) and real life scenes.

I found a whiteboard animation software, VideoScribe, that lets me achieve drawing like effects without any drawing knowledge, however it does not let me add any video or edit the video track.

Suppose I 


  draw a man -> drag him -> walking animation -> draw a girl -> drag and
  animate again -> draw a dog jumping towards them -> erase dog -> drag
  both to come close -> draw rain -> raining -> draw umbrella -> ...


I'll prefer to use videoscribe for drawing effect and flash for rest. But I need to adjust frames everytime. And if I later on realize that dog should look more cute. I would have to rework since It may again require adjusting scenes, platform and position of other elements.

I was wondering if Flash has some actionscript which can put sketch/drawing/painting effect to a SVG image then we at least combine video scribing with Flash only. It'll save a lot of time in importing/exporting and editing. Especially when we commit a mistake in past work. 

Is there any software or Action Script to achieve this without needing advanced knowledge?

Any end-to-end tutorial which can teach me how to make videos like this may also help me.
Well in that case you would export the video from VideoScribe and then edit it together with your other video material in an video editing program (also referred to as NLE).
Quite straight forward process, how you do this step by step depends on the video editing software you want to use.

There is the free Lightworks and commercial solutions like Adobe Premiere, Sony Vegas or Apple Final Cut and Apple iMovie.
I'd suggest you look into a solution that looks like it appeals to you and then watch a tutorial on the basics of that program.