{
    "id": "http://tomcrane.github.io/scratch/manifests/3/av-basic.json",
    "type": "Manifest",
    "label": "A choice of video, followed by some audio, 2 canvases. Second canvas has no w,h; only duration",
    "sequences": [
        {
            "type": "Sequence",
            "canvases": [
                {
                    "id": "http://tomcrane.github.io/scratch/manifests/3/canvas/1",
                    "type": "Canvas",
                    "label": "Associate multiple Video representations as Choice",
                    "height": 1000,
                    "width": 1000,
                    "duration": 100,
                    "content": [
                        {
                            "id": "http://tomcrane.github.io/scratch/annos/3/page/1",
                            "type": "AnnotationPage",
                            "items": [
                                {
                                    "id": "http://tomcrane.github.io/scratch/annos/3/anno/1",
                                    "type": "Annotation",
                                    "motivation": "painting",
                                    "body": [
                                        {
                                            "type": "Choice",
                                            "choiceHint": "client",
                                            "items": [
                                                {
                                                    "id": "http://example.org/foo.mp4",
                                                    "type": "Video",
                                                    "format": "video/mp4; codec..xxxxx"
                                                },
                                                {
                                                    "id": "http://example.org/foo.webm",
                                                    "type": "Video",
                                                    "format": "video/webm"
                                                }
                                            ]
                                        }
                                    ],
                                    "target": "http://tomcrane.github.io/scratch/manifests/3/canvas/1"
                                }
                            ]
                        }
                    ]
                },
                {
                    "id": "http://tomcrane.github.io/scratch/manifests/3/canvas/2",
                    "type": "Canvas",
                    "label": "Track 2",
                    "description": "",
                    "duration": 45,
                    "content": [
                        {
                            "id": "...",
                            "type": "AnnotationPage",
                            "items": [
                                {
                                    "id": "...",
                                    "type": "Annotation",
                                    "motivation": "painting",
                                    "body": {
                                        "id": "http://example.org/iiif/foo2.mp3",
                                        "type": "Audio"
                                    },
                                    "target": "http://tomcrane.github.io/scratch/manifests/3/canvas/2"
                                }
                            ]
                        }
                    ]
                }
            ]
        }
    ]
}