Nplayer External Codec __exclusive__ Guide

You are trying to play an MKV with DTS-HD Master Audio. iOS does not support DTS externally. Solution: Go to Settings > Codec > Audio. Force Internal Codec for audio. Keep video on External.

For any serious media enthusiast using nPlayer, learning how to source and install an external codec is not optional—it is the single most important upgrade you can make to your mobile viewing experience. nplayer external codec