You’re in the wrong forum.
The Forum is for the 2014 WDTV Media Playe r Latest Firmware 1.02.17
MP4 Playback issue is resolved
- Resolved some .MP4 videos not playing
Your problem with MP4 is well documented here: In the WDTV Live Streaming Forum
Only 2 things you can 1) Remux your MP4’s or 2) Rollback to Firmware 2.01.86