Mask tracking

[mattistupid]

trying to figure out the best way to mask a moving person, to be filled in as a solid color on another background. Think ipod commercial style but not on a colored background, rather in another shot. any ideas?

 

[kai]

the correct answer would be the lowly art of rotoscoping. Time consuming and tedious, but it will net the result you're after.

 

[Funkycoldg]

If you havent shot the person yet, film them on a green/blue screen. But if you have, Kai is right. Gotta put in the time of rotoscoping them out.

-John

 

[Matt Grunau]

Ditto and ditto, with one addition:

Even if you have filmed your talent, but didn't do it against a greenscreen, film it again. You will save more time, money, headaches, and eye strain by keying.

Usefull hint:

Film your subject with your camera rotated 90 degrees so you are fillming them with 720 on the vert. Since it is going to be a composited shot, you will get many more pixels, and hence, an cleaner key pull.

 

[surf]

Film your subject with your camera rotated 90 degrees so you are fillming them with 720 on the vert. Since it is going to be a composited shot, you will get many more pixels, and hence, an cleaner key pull.

this is very, very useful!

 

[FREUDENBERG_FILMS]

Sorry but both rotoscoping and keying go hand in hand in a lot of shots. We use rotoscoping all the time when an actors foot foor e.g has too mush greenspill from the greenscreen due to the item he or she is using cant be lit for the scene. But then if its an easy shot make sure your lighting is correct and the actor or item back lit and a chromakey will be the best option.

We use After Effects 6.5 Pro for rotoscope what adobe calls a motion mask. It is very time consuming as Kai said but is well worth it when you see the results. AE 6.5 also has a keying function that keys a rotoscope around the edge of a bluescreened actor/item . So quickest way would be this method otherwise if your shoting on loaction with real backdrops not keyed in sets motion mask is the way to go.

Cheers

Michael freudenbnerg

 

[Matt Grunau]

AE 6.5 also has a keying function that keys a rotoscope around the edge of a bluescreened actor/item . So quickest way would be this method otherwise if your shoting on loaction with real backdrops not keyed in sets motion mask is the way to go.

I think I know what you are referring to as far as the concpet goes, but could you give a little more info as to the name/location of the option/filter you are talking about? Sounds very usefull.

You aren't talking simple moving masks are you?

 

[mattistupid]

Ditto and ditto, with one addition:

Even if you have filmed your talent, but didn't do it against a greenscreen, film it again. You will save more time, money, headaches, and eye strain by keying.

Usefull hint:

Film your subject with your camera rotated 90 degrees so you are fillming them with 720 on the vert. Since it is going to be a composited shot, you will get many more pixels, and hence, an cleaner key pull.

What I was concerned with is which option will get the better results so thank you for the advice.