Because the Lite version removes background trackers and the "Streaming Service" process, your CPU sleeps when the video stops. You will notice approximately 15-20% better battery life compared to the current Play Store version (version 1.24.x as of writing).
One of the biggest frustrations for MX Player users occurred several years ago when the developers had to remove native support for Dolby Digital (AC3) and DTS audio codecs. Because these are proprietary technologies, licensing fees are required to support them.
The result? Users playing MKV or MP4 files with AC3 or DTS audio tracks would experience video with no sound.
The "AC3/DTS Mod" solves this by injecting the necessary codec libraries back into the APK file. This allows the player to decode these audio formats natively, restoring sound to high-definition movie rips and other media files that the official Play Store version might ignore.
If you need AC3 or DTS support, or simply want an ad-free experience, consider these legitimate alternatives: