So I found a new way to auto transcribe JAV that works really well and though I'd share it here. I used to do this with the Google translation API but that was okay at best. This one is based on the open source whisper AI of OpenAI and is much better. Basically everything that was said in the JAV movie I tested was properly translated and it had a lot of dialogue to. Very cool.
It can be used by a GUI or using the command line. It's also very easy to set up although it's not as easy as installing an exe (took me about 5 minutes for the gui and another 15 for GPU support). The good thing is that everything is run locally and is nice and quick too (I do have a good GPU though). Here is the link of the library: https://github.com/tomchang25/whisper-auto-transcribe
Just thought I post it here if anybody else here is interested in good automatic translations for their JAV files (or any of the other 98 languages for that matter).