Quick Tip – RGB Pass Compositing In After Effects

Quick Tip – RGB Pass Compositing In After Effects

on Mar 24th 2011 with 16 comments
Tutorial Details
  • Requirements: 3d Software and After Effects
  • Difficulty: Beginner
  • Run Time: 8:56 min
Download Source Files

In this tutorial we will learn about “RGB Pass Compositing” in After Effects. RGB pass compositing is something that gives freedom to the compositor to work on individual objects rendered from 3d applications. It is a well known and much used technique in production houses. This tutorial covers both the rendering technique from Maya and the compositing method within AE.

Tutorial

Download Tutorial .mp4

File size: 20.3 MB

 
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Chandan Kumar is a VFX artist from India with having more than 6 years of experience in both production and education. He runs his own website www.vfxrider.com where he produces video tutorials on After Effects.  

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  • guatita llena

    wouldn’t it be better just to set different object ID for every object, then render from maya to a .rpf image with object ID and then use 3d channel–>ID matte effect in after effects?

    • http://www.ryanmaurodesign.com Ryan

      .rpf and .rla files can only be rendered in 8 bit and 16 bit color depth (out of C4D at least) and when you use the Object ID and or ID Matte, the edges aren’t always perfect and need to be choked and blurred slightly to compensate.

      I use .rpf sequences quite often for quick renders and easy compositing as you suggest, but the method used in this tutorial/tip is probably best for specific instances. Does anyone agree or disagree?

      • Emin

        Quote: ” the edges aren’t always perfect and need to be choked and blurred slightly to compensate.”

        In C4D Anti-Aliasing can consider Multi-Passes, doesn’t it work with .rpf and .rla?

    • Subhash

      Thats a very useful tip Thank you guatita!

    • http://www.vfxrider.com Chandan Kumar
      Author

      Definitely! You can watch my another tut based on Object Id. You name it, I have it… :)

  • Nono

    Very interesting technique. More a tip than a tutorial but I’d like to see more of this kind on AETuts.

  • frankyframe

    basic but great

  • Amit

    thanx

  • Amit

    wanna have more of these tips…hope u’ll help me

  • Yekohara

    Another great tip!! thanxx Chandan!

  • AntoxaGray

    What if objects overlap? Will there be mask problems?

    • http://www.vfxrider.com Chandan Kumar
      Author

      There wouldn’t be any problem. See the “sphere”…its behind the “cone” and when I have applied an effect onto it, it is not giving any problem.

  • ram

    ya very helpfull tip but i have doubt in rgb pass can u actually describe the definition of the rgb pass y it is used ? if u can it willl be very help fulll

  • http://www.facebook.com/sdavy123 Steve Davy

    Nice, but basic. Doesn’t cover any of the issues associated with alpha channel stacking or premultiplication.