We are not going to discuss the video title in this post, in fact, I’ve written a detailed blog post on how to write a compelling YouTube video title.
In other words, if you don’t have a great YouTube thumbnail your click-through rate sucks and you hardly get traffic.
If you are very serious about your video traffic then performing the YouTube thumbnail AB test on your video helps to increase the traffic.
Especially if you are promoting a product through YouTube, this AB testing helps to find the best thumbnail that drives more sales.