When MX Player was acquired by Times Internet , the app’s legal strategy shifted. To avoid paying Dolby for every free user, the developers removed native E-AC3 support from the main app available on the Google Play Store. The app now relies on a separate, user-installed file.
If you download a high-quality MKV or MP4 file with 5.1 or 7.1 surround sound, chances are you will hear video but no audio. Here is why that happens, and exactly how to fix it. E-AC3 (Enhanced AC-3) is a proprietary audio format owned by Dolby Laboratories. To legally include this codec in an app, developers must pay expensive licensing fees per download.
Just remember: for the smoothest experience, or switch to VLC to avoid the hassle forever.
Uninstall updates > Download the Neon codec ZIP > Point MX Player to the ZIP > Restart.
The main culprit?
For years, MX Player has been the gold standard for mobile video playback on Android. Its combination of hardware acceleration, gesture controls, and subtitle management is unrivaled. However, in recent years, a frustrating pop-up has plagued users: “Audio codec not supported.”