Tap . The app will restart, and your EAC3 audio will immediately start working.

This is critical. Installing the wrong architecture will crash MX Player.

You cannot install an ARMv7 codec on an ARMv8 device (and vice versa). Open MX Player > Settings > . Look for the line: "Device supports NEON: Yes" .

Play a video with EAC3 audio. Tap the three dots > Tools > Audio Tracks. You should see "EAC3 (Custom codec)" instead of "EAC3 (SW)" .

Open your web browser and navigate to the official MX Player Custom Codec repository on GitHub (maintained by developers like AIO Codec ).

Hardware decoding (HW) uses your phone's physical processors to play media efficiently, but it sometimes skips complex audio tracks. Software decoding (SW) uses processing power to carefully render audio. Go to > Decoder . Check the boxes for HW+ decoder and HW+ audio decoder .

While the player is incredibly powerful, it legally cannot include the codec because Dolby Laboratories charges high royalty fees. To solve this, developers and enthusiasts created "Custom Codecs"—external add-ons that restore high-quality surround sound support for free. Why "Extra Quality" Matters

MX Player remains one of the most powerful media players for Android. However, you have likely encountered the frustrating "audio format EAC3 is not supported" error. This happens because MX Player removed certain audio codecs due to licensing issues.