Modern Android devices typically use one of three main custom codec variations: ARMv8 NEON (mx_neon64.zip): The standard for modern 64-bit ARM smartphones and tablets. ARMv7 NEON (mx_neon.zip): For older 32-bit ARM devices. AIO ZIP (mx_aio.zip):

Even with the correct codec, problems can arise.

You need a codec version that matches your MX Player version (e.g., v1.90.1).

MX Player will prompt you to restart. Once reopened, your videos with EAC3 or DTS audio should play with sound.