【Rails】取得したJSONのレコードの一部を抜き出したい

以下の通り、vimeo_videoには以下の生のJSONが入ってます。

 pry(#<MoviesController>)> vimeo_video
=> #<VimeoMe2::Video:0x00007ffe0d1258
 @api_version="3.4",
 @base_uri="https://api.vimeo.com/videos/59",
 @client=
  #<VimeoMe2::Http::HttpRequest:0x00007ffe0d1257
   @allowed_status=200,
   @body=nil,
   @end_point="https://api.vimeo.com/videos/595/comments",
   @headers={"authorization"=>"Bearer hoge", "Accept"=>"application/vnd.vimeo.*+json;version=3.4", "User-Agent"=>"Vimeo_Me2"},
   @last_request=
    "{\"total\":0,\"page\":1,\"per_page\":25,\"paging\":{\"next\":null,\"previous\":null,\"first\":\"/videos/59/comments?page=1\",\"last\":\"/videos/59/comments?page=1\"},\"data\":[]}",
   @method="get",
   @query={},
   @ratelimit={"limit"=>"500", "remaining"=>"498", "reset"=>"2021-09-08T13:22:48+00:00"},
   @token="hoge">,
 @token="hoge",
 @video=
  {"uri"=>"/videos/59520",
   "name"=>" - 仮タイトル",
   "description"=>nil,
   "type"=>"video",
   "link"=>"https://vimeo.com/5952/hoge",
   "duration"=>2061,
   "width"=>640,
   "language"=>nil,
   "height"=>360,
   "embed"=>
    {"buttons"=>{"like"=>true, "watchlater"=>true, "share"=>true, "embed"=>true, "hd"=>false, "fullscreen"=>true, "scaling"=>true},
     "logos"=>{"vimeo"=>true, "custom"=>{"active"=>false, "url"=>nil, "link"=>nil, "sticky"=>false}},
     "title"=>{"name"=>"user", "owner"=>"user", "portrait"=>"user"},
     "end_screen"=>[],
     "playbar"=>true,
     "volume"=>true,
     "speed"=>true,
     "color"=>"00adef",
     "event_schedule"=>true,
     "uri"=>nil,
     "html"=>
...
省略
...
   "download"=>
    [{"quality"=>"source",
      "type"=>"source",
      "width"=>854,
      "height"=>480,
      "expires"=>"2021-09-09T01:01:56+00:00",
      "link"=>
       "https://player.vimeo.com/play/2802205?s=595200946_1631149316_5fb7b1d2b2bb752d1a62d29b4b784604&loc=external&context=Vimeo%5CController%5CApi%5CResources%5CVideoController.&download=1&filename=y2matecom%2B-%2BF%25A1BARWHAT%2BIS%2BYOUR%2BPROFIT%2BSTRUCTURE_480psource.m4v",
      "created_time"=>"2021-08-31T10:22:55+00:00",
      "fps"=>23.98,
      "size"=>157430048,
      "md5"=>"82ef5759cc1e0569a186c81f06066054",
      "public_name"=>"Original",
      "size_short"=>"150.14MB"},
     {"quality"=>"sd",
      "type"=>"video/mp4",
      "width"=>640,
      "height"=>360,
      "expires"=>"2021-09-09T01:01:56+00:00",
      "link"=>
       "https://player.vimeo.com/play/28022064?s=595200946_1631149316_731f55e4b38dc9a7f711120d03be0dd7&loc=external&context=Vimeo%5CController%5CApi%5CResources%5CVideoController.&download=1&filename=y2matecom%%2BIS%2BYOUR%2BPROFIT%2BSTRUCTURE_480p164.mp4",
　　　　　　　　　　　　　　#↑のURLのみ抜き出したいです

ちょうど上記のlinkのデータを抜き出し、render status: 200, json: vimeo_videoでView側にjsonを渡したいのですが、いい方法はないでしょうか。
正規表現で抜き出そうかと思いましたが、TypeError: no implicit conversion of VimeoMe2::Video into Stringというエラーがでてきて、データ部分を.to_sしても解決に至りませんでした。

どなたか知恵を貸していただけると幸いです。
よろしくお願いいたします。