“downloads”:[

        {

           "key":{

              "parentKey":{

                 "kind":"PornEntry",

                 "id":4781423177236480

              },

              "kind":"DownloadEntry",

              "id":5110435556622336

           },

           "url":"http://www.porn.com/videos/hot-customer-lida-enjoys-masseurs-big-cock-2447095",

           "fileSize":0,

           "hosterKeyId":5937455937093632,

           "downloadType":4,

           "entryType":4
        }


     ],

     "publishDate":1460649785469,

     "duration":301,

The “url key” does not deliver the .mp4 extension:
“url”:“http://www.porn.com/videos/hot-customer-lida-enjoys-masseurs-big-cock-2447095”,

Please need your help

Regards