Play an AC3 or DTS test file. While playing, tap the top-right corner to see the info overlay. You should see (hardware acceleration) or “HW” with the codec name. If you see “SW” (software), the custom codec is not functioning.
The video uses a very rare codec (e.g., AV1 or VP8 with odd parameters). Solution: The 1.49.0 codec does not support AV1. Use software decoding or a newer version of MX Player for such files. Mx Player 1.49.0 Armv8 Neon Codec Zip File
: The ARMv8 NEON version is specifically designed for 64-bit devices, ensuring that audio decoding doesn't lag or drain your battery unnecessarily. Play an AC3 or DTS test file
The "ARMv8 Neon" designation means it is specifically built for 64-bit ARM processors , which are standard in most modern Android smartphones and tablets. If you see “SW” (software), the custom codec
Force-close the app (swipe it away from recent apps) and relaunch it. This ensures that all decoders are freshly loaded.