Adding new background to existing Video clip

PS
Posted By
Peter_Smythe
Jan 27, 2004
Views
547
Replies
13
Status
Closed
Does anyone know how to replace an existing background in a video clip with a new one?

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J
JasonSmith
Jan 27, 2004
What video software are you using?
PS
Peter_Smythe
Jan 27, 2004
Premier Pro and after effects. I have a clip of a person that I want to put into another world if you like. I need a quick way to extract either the subject or the background and remove from multiple frames.
MV
Mathias_Vejerslev
Jan 27, 2004
Premiere and After Effects both have their own forums. You might get better help there.
PS
Peter_Smythe
Jan 27, 2004
I may do but you typicaly use Photoshop for the editing of the frames and then Premier to do transitions ect – so I think this is the correct forum.
MV
Mathias_Vejerslev
Jan 27, 2004
Okay. If you have a plain background, I´d use something like Select>Color Range, or do some channel manipulation to build a mask, in order to extract the person. If you have a busy background, its a bit more complicated, and you might have to extract manually with Quick Mask in the end.
PS
Peter_Smythe
Jan 27, 2004
Is their a way to do many frames at a time or am I going to have to do 1 by 1 ?
J
JasonSmith
Jan 27, 2004
You’ll have to do the masking frame by frame – that’s why AE might be better for this sort of thing.
PS
Peter_Smythe
Jan 27, 2004
whats AE ?
J
JasonSmith
Jan 27, 2004
AE – After Effects.
PS
Peter_Smythe
Jan 27, 2004
DOh!
J
JasonSmith
Jan 27, 2004
I’ve done this sort of thing in Photoshop, and I’ve done this sort of thing in Final Cut and After Effects – if it’s more than 2 seconds of footage, trust me – you dont want to do this in Photoshop.
PS
Peter_Smythe
Jan 27, 2004
Which is the best method and application then ?
J
JasonSmith
Jan 27, 2004
That depends on what you have to work with – what type of background there is.

Hopefully it’s a pretty consistent background, in AE there’s a matte filter that lets you select the color you dont want – your background color – and removes it.

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