Triggers using Keyboard

From v1.4.0, you can use keyboard key presses as a trigger for activating content playback in the SMIL Playlist.

Using keyboard to trigger content

Define a trigger based on a key press sequence

• The origin is always set as keyboard.
• data defines the key sequence pressed on the keyboard (in the example below the trigger will become active if you press 5 times a)
• The action is set to keydown (the player listens for key-down events; the attribute value itself is informational).

You can define any number of triggers with various data. Each data has to be unique, and one data should not be a substring of another.

Keys must be pressed in quick succession — the sequence buffer resets if more than 200 ms pass between two keystrokes. Modifier and function keys (Shift, Ctrl, Enter, F1–F12, …) are ignored and neither extend nor reset the sequence.

<trigger id="trigger1" condition="or">
    <!-- origin: trigger source; data: key string to match; action: keyboard event -->
    <condition origin="keyboard" data="aaaaa" action="keydown"/>
</trigger>

For sub-region setup see Sub-regions, for trigger duration (dur/repeatCount) see Trigger duration, and for cancellation (end) see Cross-trigger cancellation.

Define content triggered by the keyboard trigger

<par>
    <!-- referencing <trigger id="trigger1"> defined in <head>      -->
    <seq begin="trigger1">
        <video src="https://demo.signageos.io/smil/zones/files/video_1.mp4"
               region="trigger-region"> <!-- As a region you always set the parent of the sub-regions -->
        </video>
    </seq>
</par>