turntable_020.zip (111.8 KB, 187 views)
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2
13-06-2007
, 07:34 PM
Moderator
Join Date: Oct 2002
Location: London, UK
You have no alpha channel that's why. You need to go in and set the alpha to pure white across the whole tiff in shake or After Effects or even a batch job in photoshop.
Alan
Technical Director - Framestore
Currently working on: Your Highness
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3
13-06-2007
, 07:38 PM
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Join Date: Sep 2003
Location: Harwich, UK
Bugger, guess I am a bit rusty.
Does that mean I have to go into Maya and set that and then re-render the lot.
If that's what has to be done the fair enough.
Cheers
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4
13-06-2007
, 07:53 PM
Moderator
Join Date: Oct 2002
Location: London, UK
no not at all. Re-read my post. You can do it as an offline thing. What apps do you have apart from premier? Photoshop?Shake?After Effects?
Alan
Technical Director - Framestore
Currently working on: Your Highness
IMDB
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5
13-06-2007
, 08:02 PM
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Join Date: Sep 2003
Location: Harwich, UK
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6
13-06-2007
, 08:08 PM
Moderator
Join Date: Oct 2002
Location: London, UK
so do it in that, just add an alpha and re-save
Alan
Technical Director - Framestore
Currently working on: Your Highness
IMDB
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7
13-06-2007
, 08:10 PM
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Join Date: Sep 2003
Location: Harwich, UK
Cheers for that mate, i'll get on that right away.
:attn:
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8
14-06-2007
, 06:31 AM
Registered User
Join Date: Feb 2007
Location: my house!!
OR, it recognizes .iff files, they are of good quality and they render quickly.
Sparticus
Expect to excell...
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9
14-06-2007
, 09:41 AM
Subscriber
Join Date: Feb 2006
Location: Australia
if you are using AE 7 read no further.., if under that version AE will not read native maya files (iffs) unless you open and change 'all recognisable files' to 'all files' and then tick the force sequence box (bit rusty on 6.5 but you will see what I mean) as far as the alpha.., just press 'best guess' when the files open
take it easy and life will be easy
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10
30-06-2007
, 12:45 AM
Subscriber
Join Date: Sep 2003
Location: Harwich, UK
Well I have seam to run into the same problem with another scene.
I turned on the Alpha channel in the render globals but I still get no alpha channel when I render a frame.
This may sound really silly but is there another place where I need to setting the alpha channel?
Cheers
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11
30-06-2007
, 01:56 AM
Moderator
Join Date: May 2005
Location: Manchester Uk
Are you rendering with mental Ray? (I assume you are cos of the lovely ambient occlusion render that youve done.
In the render globals, I think its in custom entities (in the mental Ray Tab) theres an option, something like Pass custom Surface to alpha check that and it should be fine and render out the alpha channel
"No pressure, no diamonds" Thomas Carlyle
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12
30-06-2007
, 01:59 AM
Subscriber
Join Date: Feb 2006
Location: Australia
Tim, Im no expert thats for sure. you need to be working in 32 bit, thats 8 bits each for RGB and another 8 bits for alpha. on import you should have an option box come up (in After effects) that asks if you want to ignore the alpha ( other questions too but you know what they are). should be no problem??
this must be a maya question, how to get alpha tiffs out of maya?? after effects shouldn't give you grief. if so let us know. all I can suggest is look at the help files (if this is a maya question) other than that have you looked at the stacking order of your layers?? the alpha lays on top (I think?? Id have to go in and have a look, some things we do end up becoming automatic or juist 'do this and see what happens')
M
not enough info here for me (not that I think I could help much but one never knows)
Steve and me must have been witting at the same time.
take it easy and life will be easy
Last edited by mirek03; 30-06-2007 at 02:07 AM.
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13
30-06-2007
, 03:44 AM
Moderator
Join Date: Oct 2002
Location: London, UK
you dont need to be working at 32bit at all! 8bit tiffs can have alpha channels! I'm not 100% sure but I think gster123's response will be what you need to do. It's not about bit depth.
Alan
Technical Director - Framestore
Currently working on: Your Highness
IMDB
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14
30-06-2007
, 04:22 AM
Subscriber
Join Date: Sep 2003
Location: Harwich, UK
Thanks to all.
gster123's suggestion worked and I now have a lovely alpha channel.
I always love posting my problems here. Such a wealth of knowledge.
Thanks again.
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15
30-06-2007
, 06:45 AM
Subscriber
Join Date: Feb 2006
Location: Australia
i thought the question related to rendering a sequence in another app.., I know very little about the alpha channel in maya except there is one
it matters a lot in a graphics app.., 8 bits a channel.., i think its common knowledge for those using any adobe product or graphics app.. I would have thought it mattered on import to a compositing app.., but in maya.., a mystery to me
take it easy and life will be easy
Last edited by mirek03; 30-06-2007 at 06:48 AM.
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