Why not use the new mask tracker and fill in the mask.
Fill in the mask with what? The sky looks solid, but it does change color. What would the best way to blend that in be?
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Welcome to the world of compositing...
Assuming that the camera is moving in the shot I would Export a frame as a Photoshop file from where the camera move starts. Say this places the object you want to remove on the far left side of the screen and leaves a bunch of sky on the right.
Now I'd remove the head in Photoshop and use the clone or patch tools inside Photoshop to fill the hole. This creates a clean plate that you can use for background replacement.
Inside AE you may have to do some motion tracking or use other tricks to keep the sky lined up. I'd have to see the footage to give you a setp by step but this should get you started.
First of all, thanks for replying.
Here's the link to the actual clip, excuse the audio. I'm using the clip from about the halfway point til the end.
I've removed the head in photoshop as instructed, where do I go from here?
Thanks for helping.
So I downloaded your video and took a look. To replace the head on the second figure from the left I simply moved to frame 250, duplicated the footage layer, used the clone stamp to replace the head with sky giving plenty of padding, set Paint to paint on all frames and then extended the paint strokes to the entire timeline. I also applied Layer>Time>Freeze Frame to the clip. Then I pre-composed the top copy so that I could use a mask to precisely cut out around the collar. I then added a Motion Track null to the comp and gave a quick motion track to the footage picking a couple of points on the second figure from the left that were below the collar. I ran a motion track, applied the motion track to the null, then parented the pre-comp to the null so that it would follow the camera move.
Took about 10 minutes. Here's a CS6 project file that uses your footage. You'll have to replace the footage in your comp and then it should work.
You could use the PSD that you created instead of all the painting and pre-comping. IOW, if you replace the pre-comp with the PSD you made at the proper frame then drew your mask and parented the PSD to the Null everything should work just fine.
Thanks so much. You are a saint among men.