Vidnami is a powerful web-based video software that helps you turn your blog post, articles, script or any promotional content into professional and prestenable videos.
It is a product created by Market Samurai (Keyword Tool) which is not a stranger in this industry. Content Samurai started in 2015 till today and keep improving.
There are a lot of similar software, but not even come close in terms of feature, improving and user friendly. The best of all it is absolutely free to sign up for 7 days free trial without credit card information and no watermark. You can create as many video as you like and keep it.