Možda ti fali ovaj 3. korak?
INSTRUCTIONS:
1. Install the latest available version from playstore
2. Download the latest file from the link below (No need to unzip it)
3. Open MX Player, Go to Local Player Settings/Decoder/General
and tap the Custom Codec tab then select the version you downloaded. DONE!
https://www.youtube.com/watch?v=wr03V5H6l3Y