How do I use ENG instead of EN for audio tracks?

I would like to use CZE instead of CS because it just looks better imo.

I don’t just want to change the track name to CZE because I want to reserve this field for (DTS, AC3, 2.0, 5.1 etc).

So it shows as CZE, DTS as the audio Track in the selection.

I made some clips where I was able to do that a few months ago, but I just can’t replicate it anymore.

Welcome!

You can’t. Please read the following FAQ entry for details: