When optimizing video for search engine visibility generally you’ll see 5 or 6 of the nearly 20 SEO “checkbox” items covered. What is missing, lost in the shuffle of getting that marketing video published, is site relevance or directory context. You can see the authority ‘checkbox’ hard at work in the index (link it to G+ for real weight), sometimes the manually uploaded transcript, captioning or a few more of the most commonly used optimization items but much more rarely will you see a distinct landing page. An optimized landing page with relevant copy and images. Or an optimized landing page with contextual relevance amidst the other pages in the aligned directory.
Put that optimized video page in context and watch it do its job. A rising video page lifts all links!
Just a thought.