I think the bottom line is that displaying images does not behave as it used to, along with some eccentricities that I believe have always been there. In any event, hopefully the J River team will resolve this.
I chose the following workaround for myself. In the living room, One MC for music runs on the first computer (connected to the amplifier) and another MC for slide shows runs on a second computer (connected to the TV). This is the only way I can control the music (play/pause, forward/backward, insert/append additional tracks) while having the same controls over the image playback on the second computer.
Of course, it would be nice if one day this would also be possible with a single computer.
In principle, MC has all the necessary techniques. Zones and the ZoneSwitch fullfills the basic requirement. But then it fails because of the little things. The use of the screen or screens by the zones is not organized. If several zones make image outputs (also album covers), Theater Mode behaves strange. Events in a Playlist in Backround switches Display from one zone to the other. Sometimes photos are displayed in fullscreen, sometimes inside the PlayingNow Page. And it becomes even more complicate when working with detached windows. While moving from one menu entry to another in Theater Mode detached Window sometimes closes and sometimes TheaterMode is terminated.
- During the photo display, the menu entry for changing the zone is missing in PlayingNow. But sometimes it is there. It seems dependent on what media types are in the playlist or whether the playlist is finished.
- During the photo display, the menu entry for full screen is missing in PlayingNow. When adding an image, it appears briefly in the full screen, then it switches back to the Playing Now display.
- If the photo gets the focus while the slide show is running, it can no longer be left with the keyboard or remote control. There is no going back to the menus. Up/Dn only toggles between image rendering options and Backspace has no function. Then only the exit with the escape key helps, but this immediately leads back to the standard mode. This is unsuitable for operation without a mouse or touch screen.
This last point cannot be avoided even with my two computer setup. If you add pictures to the playlist in Theater Mode and switch between the menu items, you will quickly notice where you get stuck when you're working with the keyboard or remote control only.
What feels complicated for users may also be confusing for developers. Wouldn't a simplification and clear structure help everyone?
- No 'hidden' zone for images. Instead, preconfigured ZoneSwitch for separate zones for audio/video and images.
- Only the Active Zone makes outputs inside the MC application
- Zones can have 'detached windows', which can also be assigned to a specific screen in full-screen mode through the zone configuration. Similar to the assignment of audio devices.
- Each zone has configurable actions. I.e Activate Zone when adding titles, Start playing when adding titles, Show PlayingNow when start playing, Show in FullScreen
This could be preconfigured so that existing users would see the same behavior as in the past. With the advantage that the 'hidden' image zone would be a regular zone and no longer prevents controlling the audio playlist