Why even this question? Anyway...
When last did you receive advertising or marketing in ANY SHAPE or form that was not digital? Newspapers still count, but even I consume my news updates from my phone.
This means that your ideal client is probably consuming adverts in exactly the same place that you are. Online. Social media.
Videos and photos are how that material is delivered to us.
Without video, Coca-Cola would not give my other half mouth watering cravings every time he saw the family having the bbq on tv or the couple having a laugh... Over a chilled bottle of Coke.
They are sharing the lifestyle that comes with the product and selling that. Personal branding means sharing that lifestyle, that thing that is so relatable in the best VISUAL way possible.