# Compositing

Live FX can be used as a live compositor or as an offline compositor.

It is not as fully featured as many dedicated compositing programs are, but it is very fast and can handle large-resolution files very well. 

Some general tips:

* Since Assimilate is a layer based program, it's recommended to use multiple single-pass exr files instead of single multi-pass exrs. 
* Remember that layers in Assimilate are the opposite of photo editing programs, where the top file is in the back and the bottom layer is on top.

Here is an Advanced Compositing Tutorial:<br>

{% embed url="<https://youtu.be/s--lSOgeNXQ>" %}


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