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How can I extend my background image? [ANSWER]

Posted: Sat, 4th Nov 2006, 3:11am

Post 1 of 4

geigel1

Force: 1200 | Joined: 25th Feb 2003 | Posts: 62

CompositeLab Pro User EffectsLab Pro User

Gold Member

Hello I have a couple of questions.

1. I will be using a photo for the background..how do I make sure it extends for the length of the animation..

2. I am going to composite a creature moving over the photo..but the animation sent me has a black background instead of green..could somebody give me a step by step on how to deal with a black background that I need to remove.

Thank you.
Posted: Sat, 4th Nov 2006, 7:37am

Post 2 of 4

Hendo

Force: 13107 | Joined: 16th Sep 2004 | Posts: 848

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FXhome Team Member

geigel1 wrote:

1. I will be using a photo for the background..how do I make sure it extends for the length of the animation.
Drag the photo onto the timeline, then in the timeline, right-click on the object's main track and choose 'Set Duration'. Enter the new duration that you want.

You can also use the Crop toolbar button (next to the mouse Arrow pointer button) in the timeline to drag the object's length.

geigel1 wrote:

2. I am going to composite a creature moving over the photo..but the animation sent me has a black background instead of green..could somebody give me a step by step on how to deal with a black background that I need to remove.
Can you ask whoever created the animation to export it again and include an alpha channel? That's the easiest way.

If not, try setting the object's blend mode to Add or Screen and see if it gives you the desired result. It may, however, create a slight transparency in areas that you don't want to be transparent.

To change an object's blend mode, single click on the object's main track in the timeline to bring up its Object Inspector on the right-hand side. Then change the 'Composite' drop down to whatever blend mode you want.

Also, if you haven't done so already, I recommend you watch the Video tutorials.
Posted: Sat, 4th Nov 2006, 7:43am

Post 3 of 4

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

Just use the Import Media option to import the photo, and stretch it out on the timeline to whatever length you need it.

It might be worth your while to see if the animation could be re-rendered with an alpha channel, as that would simplify your compositing greatly. Otherwise, you can try changing the composite mode of the clip, but this likely will result in a sight transparency. Probably not the best option for a creature effect.

I'd recommend using the Value Key. Keep the black Point low, bring the white point down toward it until your black is gone. Changing the view to Project Overview can make it easier to see when the black is gone.

EDIT: Hendo beat me to it.

Last edited Sun, 5th Nov 2006, 1:03am; edited 1 times in total.

Posted: Sat, 4th Nov 2006, 9:57pm

Post 4 of 4

geigel1

Force: 1200 | Joined: 25th Feb 2003 | Posts: 62

CompositeLab Pro User EffectsLab Pro User

Gold Member

Thank you I will go back and do these and advise.