• DaVinci Resolve

  adding external matte from embedded alpha channel

  Posted by Sherwin Akbarzadeh on May 3, 2013 at 3:24 am

  Hi guys,

  Just running some tests for a upcoming grade. The test material has been composited and exported as RGB + Alpha. We want to grade the 2 layers separately in Resolve 9 Lite.

  I thought that I would be able to pull an external matte in Resolve from the Alpha channel within the clip. But all of the documentation I have seen including Juan Salvo’s helpful tutorial https://vimeo.com/49029693 uses a separate file to create this external matte.

  Just trying to minimise the number of files/legwork we have to deal with. Is there a way to do it my way ?

  Thanks

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  Johnathan Throbins replied 11 years, 9 months ago 3 Members · 4 Replies
• 4 Replies

• 

  Juan Salvo

  May 3, 2013 at 4:00 am

  You can use after effects for example to render that alpha as a matte and then use it that way,

  I believe Resolve 9.1 respects alpha channels in prores 4444 files for titles and the like.

  Thanks for the kind words Sherwin, good luck.

  Colorist | Online Editor | Post Super | VFX Artist | BD Author

  https://JuanSalvo.com
• 

  Sherwin Akbarzadeh

  May 4, 2013 at 9:36 am

  Thanks for confirming this Juan. All the best.
• 

  Sherwin Akbarzadeh

  May 8, 2013 at 4:25 am

  Hmmm… Just a follow up question:

  How can I control the matte and the inverse matte seperately?

  I have added a serial node and added matte and am able to control the matte layer separately. I would like to be able to do the same for the inverse matte. At the moment my adjustments of node 1 (below) affect the entire image.
  

  I have tried going back to media and adding the matte layer twice to a clip and then selecting straight for one and inverse for the other but this is not giving me an inverse matte.

  Thanks
• 

  Johnathan Throbins

  July 31, 2014 at 5:36 am

  you just have to click the invert button on the key input tab

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