[
    {
          "title": "purple",
          "subtitle": "subtitle1",
          "type": "asciinema",
          "desc": "description",
          "file": "demo.cast"
    },
    {
          "title": "red",
          "subtitle": "subtitle",
          "type": "video1",
          "desc": "description1",
          "file": "file1.mp4"
    }
]