Add timestamp field to video report dialog (#11339)

src/lib/media/video/__tests__/formatTime.test.ts

@@ -0,0 +1,16 @@
+import {formatTime} from '../formatTime'
+
+describe('formatTime', () => {
+  it('formats seconds as minutes and seconds', () => {
+    expect(formatTime(0)).toBe('0:00')
+    expect(formatTime(65)).toBe('1:05')
+  })
+
+  it('rounds fractional seconds', () => {
+    expect(formatTime(12.5)).toBe('0:13')
+  })
+
+  it('handles an unknown duration', () => {
+    expect(formatTime(NaN)).toBe('--')
+  })
+})