Find a Youtube video to congratulate your WhatsApp contacts, facebook etc ... copy its URL and congratulate share with an Original Happy birthday Video from Youtube without download it.
Is not necessary to download the video. You will share the video link to Youtube, and your partner will see the Youtube video.
You can share the links in WhatsApp Messenger, Facebook, Twitter, Google Hangouts, WeChat, Line, SnapChat, Skype, Viber, Kik, Tango Text, LinkedIn, Skout, Zoosk, OkCupid, Email and SMS, or in any chat or social network App