turn in to categories

index_template.md

@@ -7,7 +7,8 @@ video_duration: "{{ v.duration | duration }} "
 video_channel: "{{ v.channel.display_name }}"
 channel_url: "{{ v.channel.url }}"
 preview_image: "{{ preview_image }}"
-category: ["tv","{{ v.channel.display_name }}"]
+categories: ["tv","{{ v.channel.display_name }}"]
+is_live: ["{{ v.is_live }}"]
 
 ---