Most manufactures have sales reps who receive product training from their sales managers, who, are trained by product or marketing managers. The sales reps then pitch what they learned to customers (retailers) who have a sales team of their own. Simply put, this is the old game of telephone! The cost for this game is not knowing if your product information is being delivered to your target audience correctly and consistently.
Product videos are delivered to your sales channel before hand can be a great training tool! Do your sales reps and distributors deliver a consistent message, or are they just playing old games?