How to post process EXR in external applications

I share a video about how to process an EXR file in External applications. Thanks to @troy_s @gez @jkierbel and @andreamonzini who helped me on Twitter understanding this matter better.

The video is here

You will find links in the description as well.
Please leave a comment in case you found something in the video that is not correct, or if you have additional info.