Watermark videos using JavaScript

1WebViewer(...)
2    .then(function(instance) {
3      const license = '---- Insert commercial license key here after purchase ----';
4      initializeVideoViewer(instance, { license });
5
6      const { documentViewer } = instance.Core;
7
8      documentViewer.setWatermark({
9        shouldDrawOverAnnotations: true, // Enable watermarks for video
10        // Draw diagonal watermark in middle of the document
11        diagonal: {
12          fontSize: 25, // or even smaller size
13          fontFamily: 'sans-serif',
14          color: 'red',
15          opacity: 50, // from 0 to 100
16          text: 'Test Watermark'
17        },
18        // Draw header watermark
19        header: {
20          fontSize: 10,
21          fontFamily: 'sans-serif',
22          color: 'red',
23          opacity: 70,
24          left: 'left watermark',
25          center: 'center watermark',
26          right: ''
27        }
28      });
29    });