Your player appears to not support either the audio or video codec, or the container format.
(You can have an "H.264" video codec but it may be a newer profile like "4.2" and if the player can only decode up to "4.1" it won't work.)
The only option there is to CONVERT into a format that works which can be done fairly well on a PC using HANDBRAKE though you'll want to experiment with quality settings.
https
/handbrake.fr/
Example:
a) run Handbrake
b) drag in video (can BATCH/queue videos too)
c) choose "normal" on bottom right
d) anamorphic-> none
e) optimize-> medium
f) bitrate-> 5000kbps
g) 2-pass encoding-> YES
Start there.. hope it helps. FYI, I chose the "HIGH PROFILE" and that wouldn't play on my Samsung BD player, only the NORMAL profile.
I converted BluRay and if choosing enough bitrate and long enough optimization setting (slower is better) I could get identical to source to my naked eye.