fixes #2494: Twitter bookmarklet: support uploading video

app/logical/sources/strategies/twitter.rb

@@ -25,7 +25,7 @@ module Sources::Strategies
       attrs = TwitterService.new.client.status(status_id).attrs
       @artist_name = attrs[:user][:name]
       @profile_url = "https://twitter.com/" + attrs[:user][:screen_name]
-      @image_url = attrs[:entities][:media][0][:media_url] + ":orig"
+      @image_url = image_urls.first
       @artist_commentary_title = ""
       @artist_commentary_desc = attrs[:text]
     end

app/logical/twitter_service.rb

@@ -24,7 +24,13 @@ class TwitterService
       urls << obj[:media_url] + ":orig"
     end
     attrs[:extended_entities][:media].each do |obj|
-      urls << obj[:media_url] + ":orig"
+      if obj[:video_info]
+        largest = obj[:video_info][:variants].select {|x| x[:url] =~ /\.mp4$/}.max_by {|x| x[:bitrate]}
+        urls.clear
+        urls << largest[:url] if largest
+      else
+        urls << obj[:media_url] + ":orig"
+      end
     end
     urls.uniq
   rescue