Zoner Photo Studio can play videos in the Manager's Preview window and in the Viewer.
The Windows Media Foundation technology is normally used for playback of files in video and audio formats. To expand the range of such formats that are supported, install MPlayer. Then use the preferences here to make ZPS utilize MPlayer. This free and open-source software is available as a part of e.g. SMPlayer. On its first run, Zoner Photo Studio looks for an installation of MPlayer in the usual locations. To manually set the MPlayer location, click Browse. Use the setting named For video playback, prioritize to set which method is given priority during video playback. If that method fails, then the program automatically tries the other method.