One of the big problem marketers face is "what is the return on investment?" For most of history, marketing was a black hole into which you threw money and from which you hoped customers emerged. That's changed with the rise of the web, but not as much as you'd think. According to one study, in 2013 seventy percent of marketers did NOT deliver quantifiable results (that is, tie their spending to measurable results like leads generated, sales closed, and so on). That sounds like a good way to create job insecurity.
Turns out, though, that video marketing can help solve this problem. As the Content Marketing Institute points out in this post, video behaves differently than text. You can track exactly how much of a video someone watched (you can't do that with a blog post!); you can use that viewing history to better score your prospects for your sales team; and you can import that history right into Sales Force or other CRM database, which means your sales team has a lot more data when they call a lead.
Do all that, and the next time your boss asks what you spent your budget on, you'll have a solid answer that she'll like.