If you are a freelance online marketer of agency making (free) website scans is not an effective way in getting new clients. Why? Well first of all most of your competitors are also making these SEO scans potential clients are completely bored with. Second.....so what if a website might need SEO improvements, is this a good predictor of the prospect having a marketing budget? Nope. But companies having spend time and money YouTube video's often is a good indication of having marketing budget.
Many organizations realize the importance of video in their communication strategy and invested in making their own and / or professionally made video's. But...the did not realized the importance of optimizing the video's to be better found in YouTube (and on Google SERP). Video optimization is a service any online marketer can easily offer to new clients as a first step. Once optimizing their YouTube video's the next step will be YouTube advertising, Social Media services etc.