whoever record this video literally save the group

I always feel like, the viral fancam gave Hani and EXID the 15 seconds of fame, it helped bring in attention. It's what they did with that attention that helped them succeed and become a top group. After the fancam went viral, the company started putting Hani on variety shows, where she proved to be entertaining and hilarious to watch and they immediately went back on music shows to promote Up&Down even though it was released over 6months prior. A viral video can help bring attention to someone, it's what they do with that attention that determines the outcome and longevity of their career. If EXID didn't follow up the way they did, they easily could've faded back in to the unknown and become a one hit wonder.