Need help with opus and freearc

[FitGirl]

Originally Posted by averanted

I think I know why it works for flac but not for opus.

Because checksum of extracted content is different from original. You can't use FreeArc for lossy extraction.

[averanted]

Thanks Razor12911 and FitGirl for the reply.
But what if want to make a lossy repack because msc is compressing it with lossless format.
I used to make lossy setups which installed with help of batch file but now I want to try inno setup for my installer. Is it possible to use ogg, opus, he-aac in repacks without having problem with checksum because they are definitely going to change?