[
 {
  "type": "ftyp"
 },
 {
  "type": "free"
 },
 {
  "boxes": [
   {
    "type": "mvhd"
   },
   {
    "boxes": [
     {
      "type": "mehd"
     },
     {
      "type": "trex"
     }
    ],
    "type": "mvex"
   },
   {
    "boxes": [
     {
      "type": "tkhd"
     },
     {
      "boxes": [
       {
        "type": "mdhd"
       },
       {
        
        "type": "hdlr"
       },
       {
        "boxes": [
         {
          "type": "vmhd"
         },
         {
          "boxes": [
           {
            "dataReferences": [
             {
              "type": "url "
             }
            ],
            "type": "dref"
           }
          ],
          "type": "dinf"
         },
         {
          "boxes": [
           {
            "sampleDescriptions": [
             {
              "config": [
               {
                "type": "avcC"
               },
               {
                "type": "btrt"
               }
              ],
              "type": "avc1"
             }
            ],
            "type": "stsd"
           },
           {
            "type": "stts"
           },
           {
            "type": "stsc"
           },
           {
            "type": "stsz"
           },
           {
            "type": "stco"
           }
          ],
          "type": "stbl"
         }
        ],
        "type": "minf"
       }
      ],
      "type": "mdia"
     }
    ],
    "type": "trak"
   }
  ],
  "type": "moov"
 }
]