快制作

主题

Child-Screen Groups ​

Child-screen groups are used to place multiple complete playback layouts inside one program. They are mainly designed for combined-screen and multi-screen scenarios.

For a normal single-screen program, you usually do not need child-screen groups. The default group is enough. Use child-screen groups only when different devices need to play different visuals from the same program.

What Problem It Solves ​

Take a three-screen layout as an example. There are three devices on site: left, center, and right. You want them to form one large visual, while each device plays only its own part.

In this case, you do not need to create three programs, and you do not need program groups or program labels.

The correct setup is:

  • Set the left device label to Left
  • Set the center device label to Center
  • Set the right device label to Right
  • Create three child-screen groups inside one program: Left, Center, and Right

When the Player runs, it selects the child-screen group with the same name as its own device label.

Matching Rule ​

The key rule is:

Device label = Child-screen group name

For example:

  • A device labeled Left plays the Left child-screen group
  • A device labeled Right plays the Right child-screen group
  • Child screens without a group name belong to the default group

Group names are trimmed automatically. To make on-site troubleshooting easier, use simple, stable, and recognizable names.

Step 1: Set Device Labels First ​

Before editing the program, set labels for the devices in the combined-screen device group.

Name the labels by physical position, such as:

  • Left / Center / Right
  • Top / Bottom
  • 1 / 2 / 3

Do this first because you will use the same names again when creating child-screen groups.

Step 2: Find the Screen Group Selector ​

Open the program editor. At the top of the ChildScreens area, you can find the Screen Group selector.

child_screen_group_selector

By default, all child screens in a program belong to the default group. For ordinary programs, keep the default group.

Step 3: Create a Child-Screen Group ​

Click the Screen Group selector to open the menu.

child_screen_group_menu

Choose "Create Group". The first time you create a child-screen group, the system explains that child-screen groups are mainly used for combined screens and should match device labels.

child_screen_group_confirm

After confirming, enter the group name. The recommended name is the matching device label, such as Left.

child_screen_group_create

After the group is created, the editor automatically creates a full-screen child screen in that group.

child_screen_group_created

You can add the media that this device should play into that child screen. For multi-screen playback, you usually split the original large image or video first, then add the matching part into the matching group.

Step 4: Edit Each Group Separately ​

Open the Screen Group selector again. The menu now shows the group you created.

child_screen_group_manage

You can continue creating other groups, such as Center and Right. After switching to a group, the page shows and edits only the child screens and media in that group.

Each group is edited independently:

  • Media added in the Left group does not appear in the Right group
  • Adjusting child-screen size in the Center group does not affect the default group
  • When a group is selected, newly added child screens belong to the current group

Group Management ​

The Screen Group menu provides these actions:

  • Create Group: creates a new child-screen group. If the group has no child screen yet, a full-screen child screen is created automatically.
  • Copy Group: copies the child screens and related media from the current group into a new group name.
  • Rename Group: renames the current group. After renaming, make sure the device label uses the same new name.
  • Delete Group: deletes all child screens and media in the current group.

Deleting a group deletes the content inside that group. Confirm that the child screens and media are no longer needed before deleting.

Save and Publish ​

After all child-screen groups are ready, save the program.

Then publish this program to the combined-screen device group. This is the normal single-program publish flow; program-group publishing is not required. During playback, each device selects the child-screen group that matches its own device label.

If you are setting up multi-screen playback, continue with Multi-Screen Playback.

Notes ​

  • Ordinary single-screen programs usually only need the default group.
  • A blank group name means the default group.
  • Group names cannot be duplicated.
  • Group names are trimmed automatically.
  • Child-screen group names should match device labels.
  • Copying a group copies the child screens and related media in that group.
  • Deleting a child-screen group deletes all child screens and media in that group.
  • If a device label does not match any child-screen group name, playback may be incomplete or may not show the expected visual.