mchung wrote:
I have just checked the 4K files and they are all MP4’s.
It appears that Twonky (which is embedded in the WD My Cloud) currently may not properly recognise or handle 4K MP4 files. There have been at least one prior thread, see here, on the 4K issue. I’ve loaded several 4K MP4 video files and have problems with every single one of them and its either a Twonky problem or a limitation of the DLNA client.