NEON is a 128-bit Single Instruction Multiple Data (SIMD) architecture extension for ARM Cortex-A series processors. In the context of video playback:
To fix the "EAC3 audio not supported" error, follow these steps: Identify Architecture : Open MX Player, go to Settings > Decoder , and scroll to the bottom. Under Custom Codec Mx Player 1.49.0 Armv8 Neon Codec Zip File
Given the age of version 1.49.0, it is not available on the Google Play Store. Downloading from untrusted sites can lead to malware. Use these safe sources: NEON is a 128-bit Single Instruction Multiple Data
MX Player 1.49.0 Armv8 Neon Codec a custom add-on designed to enable support for otherwise restricted audio formats like EAC3, AC3, DTS, MLP, and TrueHD on Android devices with 64-bit ARM processors go to Settings > Decoder