Today I tried to use the ktx batch scripts located in the official babylon.js repo to optimise some large textures.
The tool gave the following error once for every file:
Error: Invalid values chosen for Encode Format. Please see -help for valid parameters.
At the end there would ever only be the original pngs, the astc, dxt, and etc2 versions.
I think etc1 are missing intentionally, but the script seems to error for pvrt unintentionally.
Is this a know problem? Is there a better easy to use batch encoder maybe using ktx2?