YouTube Red already offers offline viewing of YouTube videos but it is more of a necessity in developing countries as data is a costlier operation. Smart Offline will let users queue videos to be scheduled to download overnight, when data costs are off-peak for many Indian mobile providers. Once on the latest version of YouTube, users will be able to tap a download button where they'll be asked if they'd like to download now' or save overnight'. Smart Download only works when using data over a cellular connection and not Wi-Fi. YouTube's Smart Offline is rolling out now to...
Source: http://www.gsmarena.com/youtube_smart_offline_lets_viewers_in_india_download_videos_overnight_to_save_data_costs-news-18758.php