Green Screen and transparency…

PG
Posted By
Peter_Goldfield
May 18, 2005
Views
482
Replies
8
Status
Closed
I’ve shot hundreds of objects on a green background – I need to extract the objects and use in a big (print) montage – and also use the objects in animation using Premiere Pro or After Effects. I can fairly easily extract the objects by various means in PS, but since most of the images are jpegs I’m confused (easily!) as to how to save with transparency for future use! I know jpegs don’t support transparency – do I have to resave each image as a ..psd then delete original etc?

Can anyone suggest a routine to accomplish both jobs quickly – perhaps use Keying in AE or Premiere? – but that seems a bit long winded? TIA

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L
LenHewitt
May 18, 2005
do I have to resave each image as a .psd then delete original etc?<<

Basically, Yes, although a layered TIFF would also retain the transparency
RW
Rene_Walling
May 18, 2005
And DON’T delete your original files EVER!
PC
Philo_Calhoun
May 18, 2005
For hundreds of greenscreened pictures, I wouldn’t use any built in PS tools. Ultimatte’s PS plugin or the new version of Ultra coming out would be much better. Since you have AE, you can create a one frame video in AE and even use Keylight.

But yes, dbl click the background to change it to a non background layer, delete the green background and save as tiff with alpha channel or psd.
PG
Peter_Goldfield
May 18, 2005
As If! – but thanks for looking after me!…

wrote in message
And DON’T delete your original files EVER!
PG
Peter_Goldfield
May 18, 2005
Thank you Philo, it was the double click that had somehow passed me by! All is not bad except for a bit of green spillage.

I’ll try AE but will still have to come back to PS for the composite – it would be nice if Keylight transferred to PS as a plugin – Ultimatte looks great but over $400…

But yes, dbl click the background to change it to a non background layer,
delete the green background and save as tiff with alpha channel or psd.
PG
Peter_Goldfield
May 19, 2005
For anyone following this – my big mistake was to have "use video alpha" in preferences turned on – this gave me a grey background and a lot of headaches…
I seem to remember video alpha being useful ’round about version 4?
PC
Philo_Calhoun
May 19, 2005
One of the AE options is saving the frame as an image file. You should be able to save your image as a psd with transparency out of AE. Just be careful to create a one frame movie in AE, so it doesn’t try to rekey the image several times over.
PG
Peter_Goldfield
May 20, 2005
That’s really useful Philo, thanks again.
I’ve also noted that if I load all the stills into one composition in AE and key each layer (about 200!) – when I "save frame – as Photoshop layers" I get a single .psd file with all my layers ready for creating my montage, instead of dragging one at a time in Photoshop – AND, I’m ready to start animating in AE – wonderful, just what I set out to do!

wrote in message
One of the AE options is saving the frame as an image file. You should be able to save your image as a psd with transparency out of AE. Just be careful to create a one frame movie in AE, so it doesn’t try to rekey the image several times over.

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