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alpha channel works in LV but NOT in final render
Posted: Thu Sep 20, 2018 11:17 pm
by Mindspi3D
if i turn on Alpha channel, it works in the LV, but when i render the final Image in Cinema Picture viewer, it doesn't.
in the final render there is my hdri texture seen in the Background.
but i want to have it transparent like ist properly done in the LV.
whats the prob?
Re: alpha channel works in LV but NOT in final render
Posted: Thu Sep 20, 2018 11:28 pm
by aoktar
It works, but you missed somethings! Did you checked the saved images for alpha? Did you looked to alpha option for saved file?
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 10:04 am
by Mindspi3D
ok thanks, i clicked the alpha channel under "save" in the C4D render Settings. when i open this in photoshop i have the alpha channel available, so i can cut out my object manually and replace the Background. for still Images it works.
but what is with animations with thousands of single Frames? there must be another solution?
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 10:43 am
by zoppo
Where is the difference between using an alpha channel in Photoshop and using an alpha channel in After Effects?
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 10:52 am
by Mindspi3D
in photoshop i have to MANUALLY cut out my object.
how do i use that technique in after effects with thousands of single Picture without growing old?
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 11:00 am
by aoktar
Mindspi3D wrote:in photoshop i have to MANUALLY cut out my object.
how do i use that technique in after effects with thousands of single Picture without growing old?
You don't! What's your file format?
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 11:22 am
by milanm
Mindspi3D wrote:how do i use that technique in after effects with thousands of single Picture without growing old?
You are totally right. As far as I know, no one figured out how to
not grow old doing vfx yet. The science is just not there yet.
Cheers
Milan
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 12:13 pm
by Mindspi3D
aoktar wrote:Mindspi3D wrote:in photoshop i have to MANUALLY cut out my object.
how do i use that technique in after effects with thousands of single Picture without growing old?
You don't! What's your file format?
i render my Animation out as png sequence.
this png sequence i want to use in after eccects.
then i want to have my object animation without any Background (but with all reflections on my objects Surface), so that i can add another background in AE.
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 12:14 pm
by Mindspi3D
milanm wrote:Mindspi3D wrote:how do i use that technique in after effects with thousands of single Picture without growing old?
You are totally right. As far as I know, no one figured out how to
not grow old doing vfx yet. The science is just not there yet.
Cheers
Milan
thank you for this helpful comment.
Re: alpha channel works in LV but NOT in final render
Posted: Fri Sep 21, 2018 1:27 pm
by aoktar
Mindspi3D wrote:aoktar wrote:Mindspi3D wrote:in photoshop i have to MANUALLY cut out my object.
how do i use that technique in after effects with thousands of single Picture without growing old?
You don't! What's your file format?
i render my Animation out as png sequence.
this png sequence i want to use in after eccects.
then i want to have my object animation without any Background (but with all reflections on my objects Surface), so that i can add another background in AE.
You can see alpha from png and disable or enable. It's like that since years, no problems.