Animation & Video - Polyloop

stuie · 18th February 2007, 00:48

Hi all. This is my first post here as I have just now joined. I have a question about using a video as a backdrop in Carrara. The video I want to use has objects in it. However, I would like to have an animation appear like it came from behind, say, a building that is in the video. Is that possible to do?

Thanks In Advance,

Stuie

bwtr · 18th February 2007, 03:30

You say having you video on a backdrop? This would cover the whole scene background. If you want to have it in a special location and of a required size you may find that putting the vidoe on a "Billboard"may be better.
Hope thats of some help Brian

stuie · 18th February 2007, 04:37

Either way, it still comes down to how I can make it appear that something is coming around one of the buidlings in the video. Basically, I'm thinking it will mean a lot of post work, meaning that I will probably output to an image sequence, then cut and pastes a whole lot. That's why I'm hoping for a better solution.

Stuie

bwtr · 18th February 2007, 06:51

Can you do videos with an invisable background? ie a clear see through background as you can get in Photoshop. Save as .png etc.?

You can have these clear see through, no shadows, on Billboards.

medeamajic · 18th February 2007, 10:01

You can isolate the building with mattes and keyers in After effects and put it on a sperate layer. First bring the video into Carrara as a back drop. At render time delete the video backdrop image and render with alpha. In After effects place the video as layer one. In layer two place the Carrara objects render with alpha. Then in the 3rd layer place the isolated building (using mattes and keyers). That is all you have to do. You can do it in Premiere or even Final Cut Pro the same way.

stuie · 18th February 2007, 10:28

Thanks, I'll have to check into using Premiere for mattes.

medeamajic · 18th February 2007, 13:50

Depending on the building a keyer might work better. AE would be best but Premiere can do some decent compositing.

sadot · 18th February 2007, 23:59

C5Pro can do it! you just need to set up your shader to -shadow catcher- When you do a lot of video that feature are very useful

You can also take a snapshoot of your building and create an objet -lets say a square- and put the original texture in it, the shadows in that objet will become more realistic when some objet create a shadow in it

I hope i explain myself

sadot · 19th February 2007, 00:03

If you want to take advantage of this you should see this page

http://sfx.realviz.com/products/mpro/index.php

sadot · 19th February 2007, 00:06

Other solution its render to .rpf format and do some little post -im working in .rpf file carrara tutorial- i think i need to speedit up

medeamajic · 19th February 2007, 10:47

Interesting. I could not get the zipped file to open.

rickei · 20th February 2007, 02:17

PixelFarms PFHOE looks pretty good too.

http://www.pfhoe.com/

sadot · 20th February 2007, 03:06

it´s another option if im not wrong the file that carrara reads its a .xml, i remember there was a tuto in the eovia web page to bring the matchmover data into carrara

bwtr · 20th February 2007, 03:43

Sadot, I have the download of the Shadowcatcher .zip file being flagged as a faulty file also?

stuie · 24th February 2007, 19:33

Thanks Sadot, I was thinking along those lines but never go a chance to try it out. So many things going on, so little time to get them done. Thanks all for your feedback.

18th February 2007, 00:48	#1 (permalink)
stuie Vertex Join Date: Feb 2007 Location: San Diego, CA USA Posts: 6	Animation & Video Hi all. This is my first post here as I have just now joined. I have a question about using a video as a backdrop in Carrara. The video I want to use has objects in it. However, I would like to have an animation appear like it came from behind, say, a building that is in the video. Is that possible to do? Thanks In Advance, Stuie

19th February 2007, 00:03	#9 (permalink)
sadot yeah! thats my name Join Date: Oct 2005 Location: Mexico City Posts: 720	If you want to take advantage of this you should see this page http://sfx.realviz.com/products/mpro/index.php __________________ el mundo se crea un polígono a la vez

19th February 2007, 00:06	#10 (permalink)
sadot yeah! thats my name Join Date: Oct 2005 Location: Mexico City Posts: 720	Other solution its render to .rpf format and do some little post -im working in .rpf file carrara tutorial- i think i need to speedit up __________________ el mundo se crea un polígono a la vez

20th February 2007, 03:06	#13 (permalink)
sadot yeah! thats my name Join Date: Oct 2005 Location: Mexico City Posts: 720	it´s another option if im not wrong the file that carrara reads its a .xml, i remember there was a tuto in the eovia web page to bring the matchmover data into carrara __________________ el mundo se crea un polígono a la vez

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18th February 2007, 03:30	#2 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	You say having you video on a backdrop? This would cover the whole scene background. If you want to have it in a special location and of a required size you may find that putting the vidoe on a "Billboard"may be better. Hope thats of some help Brian

18th February 2007, 04:37	#3 (permalink)
stuie Vertex Join Date: Feb 2007 Location: San Diego, CA USA Posts: 6	Either way, it still comes down to how I can make it appear that something is coming around one of the buidlings in the video. Basically, I'm thinking it will mean a lot of post work, meaning that I will probably output to an image sequence, then cut and pastes a whole lot. That's why I'm hoping for a better solution. Stuie

18th February 2007, 06:51	#4 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	Can you do videos with an invisable background? ie a clear see through background as you can get in Photoshop. Save as .png etc.? You can have these clear see through, no shadows, on Billboards.

18th February 2007, 10:01	#5 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	You can isolate the building with mattes and keyers in After effects and put it on a sperate layer. First bring the video into Carrara as a back drop. At render time delete the video backdrop image and render with alpha. In After effects place the video as layer one. In layer two place the Carrara objects render with alpha. Then in the 3rd layer place the isolated building (using mattes and keyers). That is all you have to do. You can do it in Premiere or even Final Cut Pro the same way.

18th February 2007, 10:28	#6 (permalink)
stuie Vertex Join Date: Feb 2007 Location: San Diego, CA USA Posts: 6	Thanks, I'll have to check into using Premiere for mattes.

18th February 2007, 13:50	#7 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	Depending on the building a keyer might work better. AE would be best but Premiere can do some decent compositing.

19th February 2007, 10:47	#11 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	Interesting. I could not get the zipped file to open.

20th February 2007, 02:17	#12 (permalink)
rickei Respect the Dawg! Join Date: Dec 2005 Location: USA - Conway, South Carolina Posts: 791	PixelFarms PFHOE looks pretty good too. http://www.pfhoe.com/

20th February 2007, 03:43	#14 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	Sadot, I have the download of the Shadowcatcher .zip file being flagged as a faulty file also?

24th February 2007, 19:33	#15 (permalink)
stuie Vertex Join Date: Feb 2007 Location: San Diego, CA USA Posts: 6	Thanks Sadot, I was thinking along those lines but never go a chance to try it out. So many things going on, so little time to get them done. Thanks all for your feedback.