Paper camera software filters for post-production? I have downloaded an android app called Paper Camera that provides real time camera filters such as a variety of 'sketch' and cartoony feels. I find especially interesting their filters 'Contour', which is pretty much B&amp;W contour lines, and 'Sketch Up' which looks like a rough pencil drawing.

What kind of software and what filters could I use to apply similar effects to an already recorded video file?
Adobe Premiere should do exactly what you want - it has a ton of effects plugins.

As to your second question, any screen grabber video software should let you do this - you play the video and have your wacom sketch overlay running, and just use the screen grabber software to make a video of everything displayed on the screen.