showing uploaded file in iframe

show.js

$(document).on("input",".upload", function(){
      var src = $(this).val();
      src = src.replace("watch?v=", "v/");
      src = src.replace("video/", "embed/video/");
      var abc="<iframe src='my_source' width='452' height='345' scrolling='no' frameborder='no' target='_top' allowFullScreen></iframe>".replace(/my_source/g,src);
      if (src.match(/(youtube|youtu|vimeo|veoh|dailymotion|kickstarter|metacafe)\.(com|be)\/((watch\?v=([-\w]+))|(video\/([-\w]+))|(projects\/([-\w]+)\/([-\w]+))|([-\w]+))/)) {
        $(this).next('#thumbs').empty().append(abc);
      }
      else if( src.match(/^(([a-zA-Z]:)|(\\{2}\w+)\$?)(\\(\w[\w].*))+(.mp4|.MP4|.avi|.AVI|.3gp|.3GP)$/)) {
        $(this).next('#thumbs').empty().append(abc);
      }
      else{$(this).next('#thumbs').empty();}
    });