tests/data/annotations/action_test_anno.json

    {
        "v_test1": {
            "duration_second": 1,
            "duration_frame": 30,
            "annotations": [
                {
                    "segment": [
                        0.3,
                        0.6
                    ],
                    "label": "Rock climbing"
                }
            ],
            "feature_frame": 30,
            "fps": 30.0,
            "rfps": 30
        },
        "v_test2": {
            "duration_second": 2,
            "duration_frame": 48,
            "annotations": [
                {
                    "segment": [
                        1.0,
                        2.0
                    ],
                    "label": "Drinking beer"
                }
            ],
            "feature_frame": 48,
            "fps": 24.0,
            "rfps": 24.0
        }
    }