{ "channels": [ { "fences": [], "height": 1440, "id": 0, "width": 2560 }, { "fences": [], "height": 1440, "id": 1, "width": 2560 }, { "fences": [], "height": 360, "id": 2, "width": 640 }, { "fences": [], "height": 480, "id": 3, "width": 640 } ] }