So I know the quality is bad but watching stuff on a gameboy advance during bus rides that I suffered to fit on the flash cart just somehow seems more attractive than watching the same thing on my phone in infinitely higher quality.

Anyway I’ve been able to encode the video data just fine using METEO versions 1.4/1.5/1.5(mod) but my audio always sounds completely corrupted, nothing remains of the orignal audio and I just a sound like static mixed with grinding metal. (checked on 2 emulators and my own GBA hardware)

Anyone have any ideas what could be causing it?