View Full Version : Walking through wall
April 18th, 2008, 05:11 PM
If I were to do an effect of myself walking through a wall, as a beginner, what program would be needed to accomplish that? Thanks
April 19th, 2008, 09:36 PM
one way is...
1.Shoot the wall.
2.Then shot you walking at the same angle and same light
3.Find a machine with a copy of Adobe After Effects, Apple Shake or something like those.
4.learn to rotoscope, then rotoscope shot 2 over shot 1
April 21st, 2008, 03:44 PM
the transition from being completely present to completely vanished will be the tricky part. you'll want some thng that looks like you are entering the wall and not just disappearing.
April 21st, 2008, 03:56 PM
when animating your matte, think about what parts of the body will break the plane of the wall first and last. Take an action figure (or anything really) and submerge it in water; notice how the liquid creeps in on the figure around its contour as it submerges. then think how you would animate your splines accordingly.
May 20th, 2008, 08:56 PM
boujou (if camera in motion) + eyeon fusion (or something like those)
May 21st, 2008, 03:11 AM
Possibly less low-budget, but I've just finished a few shots of someone walking through a mirror, and they actually shot it on-set with a laser line running along the plane of the mirror. This was fantastic for me, as it gave me a very definite line to roto along, which resulted in a much more natural-feeling comp.
May 21st, 2008, 07:27 AM
Possibly less low-budget, but I've just finished a few shots of someone walking through a mirror, and they actually shot it on-set with a laser line running along the plane of the mirror. This was fantastic for me, as it gave me a very definite line to roto along, which resulted in a much more natural-feeling comp.And removed the laser afterwards?
May 21st, 2008, 08:21 AM
im assuming it would only show up as either a dot or as the edge of wher eit is, so at most it's a small patch or you could roto infront of it.
May 21st, 2008, 08:50 AM
Since the laser was presumably bright red, it would not be to difficult to color correct it - and there's probably an edge effect on it as well, so the seam would be hidden too.
May 21st, 2008, 11:18 AM
There are some inexpensive laser levels that would be perfect for this.
May 21st, 2008, 01:56 PM
The laser was green, and there was a greenscreen in there too. I'd actually have preferred a different colour laser, but hey, that's what I had.
On later shots, I'd roto just in front of the laser line, so the parts with the laser on were classed as through the mirror, and so had vanished. On earlier ones, I did a mixture of spill suppress, spill replace and keying to get rid of it. It was close enough to the join with the mirror for it not to be too noticeable.