WD MyCloud devices create a .wdmc directory in any folder that has images or videos. I've solved this issue at various times by adding a new file extension for

WD MyCloud devices create a .wdmc directory in any folder that has images or videos. I've solved this issue at various times by adding a new file extension for mp4 files (mmp4, associate it with media player) until I changed apps to one that only displays video files; running a script after uploads to delete them; killing the service every time the NAS reboots (and I notice). Currently I'm using ftp instead of smb, as it doesn't seem to cause it and transfers faster as well--plus, ftp displays the hidden directories where smb doesn't.