A custom codec is a modified or custom-built codec (encoder/decoder) that can be used with MX Player to support specific audio or video formats. These codecs are not included in the standard MX Player build but can be added separately.

| Step | Action | |---|---| | 1 | Download mx_neon64.zip | | 2 | Open MX Player | | 3 | Settings → Decoder | | 4 | Scroll to Custom Codec | | 5 | Select the ZIP file | | 6 | Restart MX Player |

Open the MX Player app on your device.