# Morphing in combustion

**URL:** https://forum.highend3d.com/t/morphing-in-combustion/8034
**Category:** Compositing
**Tags:** combustion
**Created:** [November 10, 2004, 1:56pm UTC](https://forum.highend3d.com/t/morphing-in-combustion/8034 "2004-11-10T13:56:25Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![serious](https://forum.highend3d.com/letter_avatar_proxy/v4/letter/s/a698b9/32.png) [@serious](https://forum.highend3d.com/u/serious)
#### Post date: [November 10, 2004, 1:56pm UTC](https://forum.highend3d.com/t/morphing-in-combustion/8034/1 "2004-11-10T13:56:25Z")

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hi,

i just finished morphing two footages in combustion. the problem is it can't render a separate matte for compositing. how can i render mattes? it doesn't render even if i set it on alpha alone or color+alpha mode.

thanks