Now if that is the end goal here, both article marketing and video marketing can do the same thing with the same level of efficacy. Perhaps instead of asking which online marketing strategy to use first you should ask yourself which marketing strategy will work best for your business. If you are trying to promote a product, say for example a piece of equipment.
Then perhaps running a video marketing campaign will be better since you will need to show your customers how the equipment is used and what email list it can do. Doing videos has as a way to promote products has gotten a lot easier, thanks to the advancements in technology and to the internet as well. Any business owner can practically record and upload their own video and with the right online marketing tricks, that same video can bring them and their business a lot of revenue.
If you are trying to sell an idea however, or a concept, article marketing would be best. Since it would be impossible to create a demo video about a certain idea, writing articles and expounding on what the concept is about will be a much more effective strategy. In order for you to decide which online marketing method to use, you have to be very well versed with your own business. You need to fully understand your market, its trends, as well as its behavior so that you will know which method will be more helpful.