• Adobe After Effects

  DNxHD Rendering: Straight (Unmatted) vs Premultiplied (Matted), for videos without transparency

  Posted by Erik Eikeskog on April 22, 2020 at 9:58 am

  I’m wondering about how these settings affect general video quality with regards to color information..

  I see that the file I get from a straight (unmatted) render is 3 times the size of a premultiplied (matted), and I wonder why this is so. What kind of information gets lost with the other?

  The videos I render are not yet color graded, I will do that later, so if I get more color information by going for straight (unmatted), this is obviously a better option, but if there is no difference I will of course take the smaller filesize ????

  Does anyone know?

  Tero Ahlfors replied 6 years, 4 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Tero Ahlfors

  April 22, 2020 at 10:42 am

  https://www.cgdirector.com/premultiplied-alpha-vs-straight-alpha/

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