erasing objects

[PIMP]

I have an idea for simulating bullet hits on shirts. I have the idea that if i were to cut holes in my talents clothing and then in post erasing them until i want to reveal the hit. can it be done and how?thanks

 

[SeanEmer]

in photoshop, using the stamp tool and the healing brush would work. Motion track it in AE.

 

[Matt Grunau]

in photoshop, using the stamp tool and the healing brush would work. Motion track it in AE.

That works, but can be a pain, as the fixed areas don't follow the noise of the video. Then what you have to do is match noise (which is a filter and not a hard one) to make it look right.

I've done bullet hits, and it all depends on your footage. Sometimes it's better to remove the fixed footage for the reveal, and sometimes it is better to have a clean shot and add the effect later.

If it is a semi static shot, if there is not a lot of jerky motion it is often more realistic to put the tears in after you have shot it. If there is a lot of movement, it can be more effective to conceal the tears.

It really depends on the shot. If the camera was locked, I would say to add the effect when you need it. If not, the reveal may be better.

No matter which route you take, keep it short. Cut back and forth from each shot quickly, and let your brain fill in the gaps.


You will need to motion track both position and rotation, regardless.


Again, it all comes down to the shot.

And as always, showing us the footage helps.

 

[Dewy-dB]

This is an old trick a buddy of mine uses all the time. He only uses it for about the first two frames then he removes the effect (showing the hit). He just takes a square chunk of the frame can copies it. It's super ghetto, but it's highly effective for a quick shot. He does it all in FCP too,.. ha ha.

Depending on your footage you could motion track the hit, the clone a near by source and automate the paint,.. that way it'd remain constant. Well it sounds good in theory anyway.

- Greg

 

[SeanEmer]

This is an old trick a buddy of mine uses all the time. He only uses it for about the first two frames then he removes the effect (showing the hit). He just takes a square chunk of the frame can copies it. It's super ghetto, but it's highly effective for a quick shot. He does it all in FCP too,.. ha ha.

Depending on your footage you could motion track the hit, the clone a near by source and automate the paint,.. that way it'd remain constant. Well it sounds good in theory anyway.

- Greg

Sorry, but I didn't follow that at all. What does he do?

 

[Dewy-dB]

On set they put a wound on, say, the actor's right chest. So now the actor has a ripped shirt from the bullet, then a little gore.

Then they film the actor "getting" hit and falling out of frame.

In Final cut pro, they take a copy of the same frame and crop everything but the left chest. Then they superimpose that over the right. (yes it looks really bad).

Then after 1-3 frames they remove the super, reveling the wound.

So it went like this on film:
Bad guy raises gun, says line. -cut to-
Random guy says line. -cut-
Bad guy says cliche` line "wrong answer", fires gun. -cut-
Guy gets shot (using effect previously explained.) -cut-
Bad guy continues on being bad.

Like I said, it's super cheap, but it worked well. I only worked post on the film, and I though it was a squib until I asked about it.