There is a problem with OSD video settings while playing a file in ZDMC. I have updated firmware to 1.0.38 and installed ZDMC (fixed stretching issue). The OSD video settings is complete only while playing AVI files. If I play MKV, DVD-ISO, MP4 I get only settings for 3D.
I have also experienced this problem on .38 with ZDMC 16.1.1 If you turn off RKMC (System>Video>RKMC>unselect "Accelerate RKCodec") you'll get the original video OSD settings back. However, that shouldn't be the case. Maybe Zidoo team members can look into this?
Because of hardware decode, it decodes the video and then directly transfer to TV. This process has passby ZDMC. So ZDMC has no chance to adjust the video's aspect. But you can adjust it through the Box's Settings.