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Ed.it.son
Participant
October 19, 2020
Answered

Rotobrush 2: render to .mov has a blackish outline

  • October 19, 2020
  • 1 reply
  • 1030 views

I'm new to AE and rotobrush but im trying to render out something a roto with rotobrush 2.0 with transparency. When I place the clip overtop a different background but it shows blackish outline when I view it. 

Any tips on how to fix this? 

I thought I could render out a feather but it seems that feather has a black outline?

 

thanks! 
ed.it.son

This topic has been closed for replies.
Correct answer VictoriaNece

So I looked into it more and people are saying the blackoutline may because I rendered it premultiplied. So I looked into changing that setting, but when I go to intepret footage, the alpha channel is greyed out and it does not let me change the premultiplied settings. 

 

I want to go straight alpha instead. Any idea how i do this?


This definitely sounds like what's going on. You need to export using a codec that supports straight alpha (not all of them do).

1 reply

James Landy
Community Manager
James LandyCommunity Manager
Community Manager
October 19, 2020

Please post a pic of your comp, layer and timeline panels and I'll see if anything obvious stands out. Thanks.

E
Ed.it.sonAuthor
Participant
October 19, 2020

 

Thanks!!!   

James Landy
Community Manager
James LandyCommunity Manager
Community Manager
October 19, 2020

This looks like the expected behavior based on the screen shot (i.e., I'm not seeing the black outline). Take another shot, but this time place a light color solid layer underneath the roto layer, so I can see the outline better.  Thanks.

 

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