How to convert age3rec to avi file

As far as we know, no way how you can directly convert Age of Empires 3 recorded replays (.age3rec) to an AVI format exists. The only way how to achieve something like age3rec to avi conversion would be through the use of some screen recording software which will record your replay.

In a word, direct age3rec to avi conversion is not possible.
So don't expect any so-called age3rec to avi converter or age3rec to avi free online conversion tool available.

Open AGE3REC file    Open AVI file