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		<title><![CDATA[Forums - Bricks in Motion - Greenscreen.]]></title>
		<link>https://bricksinmotion.com/forums/topic/535/greenscreen/</link>
		<description><![CDATA[The most recent posts in Greenscreen..]]></description>
		<lastBuildDate>Sun, 12 Jul 2020 14:24:50 +0000</lastBuildDate>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/387347/#p387347</link>
			<description><![CDATA[[quote=D.J.M.]Hi. Thanks to all those who helped me with my right mic. topic.

I need help. I want to make a greenscreen of moving clouds in the background of one of my films but I don't know how. Could someone help?

Thanks.

D.J.M.[/quote]
You should get power director, it’s free but does have in app purchases, if you use an iPad get it on the AppStore, download  it if you use a computer just go to their website and download it. Than add your footage of the cloud, then press the two overlaying boxes and get your footage of the green screen it doesn’t have to be green screen it can be any color. Press on your green screen footage and all of the tools will pop up. Find Chroma key, then press the little color syringe and choose what color you want the cloud to replace you can adjust the intensity using the sliders. Hope this helps, God bless
Here’s the tutorial for the iPad app [url]https://youtu.be/2837nTeWXHc[/url]]]></description>
			<author><![CDATA[dummy@example.com (BCStrike)]]></author>
			<pubDate>Sun, 12 Jul 2020 14:24:50 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/387347/#p387347</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/12237/#p12237</link>
			<description><![CDATA[Axagon the free download is a very rudimentary program. It is nothing much more than a tiny utility program compared to programs like AfterEffects. In fact most video editiors like Premiere have more capabilities. Its advantage is (of course) that it is free. I tried my hand with it for a few weeks several years ago. Quickly realized that it would take for ever to complete my assignments with it and went out and purchased Premiere, AfterEfects, Audition, Encore, and Photoshop (as a bundle). Best decision I made. They are very expensive, but you can get a good price break if you are a students and can use [url=http://www.academicsuperstore.com]www.academicsuperstore.com[/url]]]></description>
			<author><![CDATA[skye@fll-freak.com (FLL-Freak)]]></author>
			<pubDate>Tue, 20 Jan 2009 11:49:58 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/12237/#p12237</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/12229/#p12229</link>
			<description><![CDATA[Hi everyone!

Sorry I have not been awnsering your messages but I have been very busy. I would like to thank everyone with all the help they have given me and I now know mostly what to do. But I have one question.

Is Axogen good?

D.J.M.]]></description>
			<author><![CDATA[dummy@example.com (D.J.M.)]]></author>
			<pubDate>Tue, 20 Jan 2009 10:10:08 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/12229/#p12229</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/11947/#p11947</link>
			<description><![CDATA[[quote=Si665]After Effects is mcu more powerful, but has a steep learning curve.[/quote]

I'm not so sure. :) Your key looks very good. 

Before I got AE, I heard all about how hard it was to use. However, the interface seems very intuitive to me. It's easy to add effects, keep track of what you've done, etc.

- Leo]]></description>
			<author><![CDATA[dummy@example.com (Leonardo812)]]></author>
			<pubDate>Mon, 19 Jan 2009 14:52:24 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/11947/#p11947</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/11914/#p11914</link>
			<description><![CDATA[After Effects is mcu more powerful, but has a steep learning curve. Never used the other programs so can't say. But Vegas is a brilliant semi pro editing suite.]]></description>
			<author><![CDATA[dummy@example.com (Si665)]]></author>
			<pubDate>Mon, 19 Jan 2009 08:18:10 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/11914/#p11914</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/11824/#p11824</link>
			<description><![CDATA[[quote=Si665]I use Sony Vegas for my Chroma Keying. I have been very happy with the results. [/quote]

I really need to download the demo and compare it with After Effects, Axogon, Wax, Cinegobs, etc.]]></description>
			<author><![CDATA[dummy@example.com (Leonardo812)]]></author>
			<pubDate>Sun, 18 Jan 2009 22:42:13 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/11824/#p11824</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/11752/#p11752</link>
			<description><![CDATA[I use Sony Vegas for my Chroma Keying. I have been very happy with the results. 

[img]http://www.brickshelf.com/gallery/si665/Sets/chromakey.jpg[/img]]]></description>
			<author><![CDATA[dummy@example.com (Si665)]]></author>
			<pubDate>Sun, 18 Jan 2009 18:21:50 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/11752/#p11752</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/11749/#p11749</link>
			<description><![CDATA[DJM,

I a week or so, I will get my life back (I am curerntly trying to get my kids of to college). If you wanted, you could send me a few frames of your movie and I can tell you if they can be keyed and how best to do it. Or at least offer some suggestions as to how to change your setup to be able to get a key in the future. 

A poor low resolution grainy out of focus image will just not key. You need a good image to start with proper lighting. But, as I have mentioned before in other threads doing as much of your special effects "in camera" is the way to go. For sky, I have gone to the fabric store and purchased a few yards of blue fabric with a cloud pattern printed on it. These I streched over a sheet of foamcore board and placed these behind my set. They did not move, but they gave the right impression. I love fabric covered foamcore backgrounds for many reasons. They are light and easy to move. They are about the right size. They are fairly cheap, and you can get just about any color or texture you can imagine. You can than also modify the backdrop by adding elements with marker, paper, paint, ...]]></description>
			<author><![CDATA[skye@fll-freak.com (FLL-Freak)]]></author>
			<pubDate>Sun, 18 Jan 2009 18:02:08 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/11749/#p11749</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/11156/#p11156</link>
			<description><![CDATA[[quote=FLL-Freak]Maggosh, Opps! BSOL.

DJM.

Most graphic programs allow you to place multiple images over each other as layers. Put your foregorund image on top of the background. Select the foreground image and lower its transparency down so you can just see the background image. Select an appropriately sized erase brush. Carefully start to erase the foreground image to allow the backgrund image to poke out. (Control-Z is your best friend). When done collapse the layers and save your frame. Now you only have 99 more to go. 

I do not know about Gimp, but Photoshop allows you to save a selection to an alpha-channel. After you do the first frame, you can start the second frame with the alpha channel restored from the previous frame. You now can restore and delete just the pixels that have changed. 

This is a painful procedure if you have alot of action or a long scene to do.

High end programs like Combustion or AfterEffects will allow you to rotoscope the mask from frame to frame. This makes the job much simpler.

(And back to the chromakey concept, using a rotoscoped mask is what you need to do to isolate one small area to key.)[/quote]

Thanks, I thinkI might know what to do now.]]></description>
			<author><![CDATA[dummy@example.com (D.J.M.)]]></author>
			<pubDate>Fri, 16 Jan 2009 23:55:28 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/11156/#p11156</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/10992/#p10992</link>
			<description><![CDATA[Correct. Rotoscope is a word that came about years ago when artists would hand draw masks on transparent material for each frame in an animation. This was done on a light table/projector device called a Rotoscope.

Nowdays, we rotoscope using keyframes in a computer. If you have a smooth motion, you simply need to draw a polygon shape for the first and the last frame and the program will calculate the "tweens" (frames between the key frames). If the motion is jerky, keyframes may need to be closer together or in the worst case every frame.

Both After Effects and Combustion (and any other special effects program worth its salt) will allow you to rotoscope a mask. Keyframing is not limited to masks. Most of these programs will allow you to vary just about any parameter from keyframe to keyframe. Things like the color of a drawn in circle, the color for a chromakey, even the framerate that the video will play back at.

Keyframes can also be calculated linearly or by a polinomial or a spline/Bezier curve. Curved interpolation gives much nicer results without jerky transitions. Human motion is much closer to a Bezier than linear motion. 

Keyframe values can also be entered as equations of your own design. Making a composited ball bounce like in real life, a artist can use the h = 1/2Gt^2 + v0t + d0 equation and have time (t) be the frame index. I even have seen an entire book of math for the animator.

Keyframe/rotoscope is one of the major foundations of animation.]]></description>
			<author><![CDATA[skye@fll-freak.com (FLL-Freak)]]></author>
			<pubDate>Fri, 16 Jan 2009 12:00:30 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/10992/#p10992</guid>
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		<item>
			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/10951/#p10951</link>
			<description><![CDATA[[quote=FLL-Freak]High end programs like Combustion or AfterEffects will allow you to rotoscope the mask from frame to frame. This makes the job much simpler.[/quote]
Does this mean that your mask is a static image and then you tell AE the starting mask image position and ending mask image position (and any needed intermediate positions) and then AE will automatically move your mask according to your position parameters over the course of your video clip?]]></description>
			<author><![CDATA[dummy@example.com (AncientBricks)]]></author>
			<pubDate>Fri, 16 Jan 2009 05:33:04 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/10951/#p10951</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/10672/#p10672</link>
			<description><![CDATA[Maggosh, Opps! BSOL.

DJM.

Most graphic programs allow you to place multiple images over each other as layers. Put your foregorund image on top of the background. Select the foreground image and lower its transparency down so you can just see the background image. Select an appropriately sized erase brush. Carefully start to erase the foreground image to allow the backgrund image to poke out. (Control-Z is your best friend). When done collapse the layers and save your frame. Now you only have 99 more to go. 

I do not know about Gimp, but Photoshop allows you to save a selection to an alpha-channel. After you do the first frame, you can start the second frame with the alpha channel restored from the previous frame. You now can restore and delete just the pixels that have changed. 

This is a painful procedure if you have alot of action or a long scene to do.

High end programs like Combustion or AfterEffects will allow you to rotoscope the mask from frame to frame. This makes the job much simpler.

(And back to the chromakey concept, using a rotoscoped mask is what you need to do to isolate one small area to key.)]]></description>
			<author><![CDATA[skye@fll-freak.com (FLL-Freak)]]></author>
			<pubDate>Thu, 15 Jan 2009 14:56:18 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/10672/#p10672</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/10665/#p10665</link>
			<description><![CDATA[[quote=FLL-Freak]In the case of masking you can also try the simple [b]BSOD[/b] program written for brickfilmers. [/quote]

BSOL. Blue Screen of [b]Life[/b], not Blue Screen of Death.]]></description>
			<author><![CDATA[caberwikijack@gmail.com (maggosh)]]></author>
			<pubDate>Thu, 15 Jan 2009 13:30:49 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/10665/#p10665</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/10660/#p10660</link>
			<description><![CDATA[Just two things.
Your discription has given me an idea on what I have to do but I don't understand...
1. How to masking with gimp.
2. How I can mask a moving background.

I know I'm probably being a right pain in the *** but please help me.

Thanks.

D.J.M.]]></description>
			<author><![CDATA[dummy@example.com (D.J.M.)]]></author>
			<pubDate>Thu, 15 Jan 2009 12:47:36 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/10660/#p10660</guid>
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			<title><![CDATA[Re: Greenscreen.]]></title>
			<link>https://bricksinmotion.com/forums/post/10658/#p10658</link>
			<description><![CDATA[:)Thanks.]]></description>
			<author><![CDATA[dummy@example.com (D.J.M.)]]></author>
			<pubDate>Thu, 15 Jan 2009 12:42:53 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/10658/#p10658</guid>
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