HeadSchema

• availabilityStartTime: 2023-10-12T10:00:00Z
• clientManifestRelativePath: "/path/to/manifest.mpd"
• compatVersion: "1.0.0"
• extra: { "key1": "value1", "key2": 100, "key3": true }
• formats: "HLS, DASH"
• fragmentsPerHLSSegment: "3"