Yeah VLC wasn't successful for me, but I always have little to no luck with VLC. It played in Daum PotPlayer. Also it was the player I used to change decoders to see if I could find one that could play it. Since I could not find the place where you can change the decoders on VLC.
DayKnight, you can get 4K video in x264/xvid etc... these codecs aren't the problem, I can play them. It's the HEVC (H265) that's the problem. The quality of HEVC 4k and 50Mbps is unbelievable, beyond ANYTHING I have ever seen, I paused the video and it looked better than most still pictures I have seen. I recommend d/ling it. HEVC is really tough to decode in realtime without a dedicated decoder. It's like when H264 came out and only the top end CPUs could play it and just barely then.
I need a decoder that's faster... or an OpenCL/CUDA/Direct Compute assisted decoder. I want something, anything really, I really would like to play these files smoothly.
Maybe the only thing to do is reencode the files down to 1080p HVEC.... but.. that's just... well.. not right.