Hi Mr. Daniel,
Going right into it, you're in a very competitive niche, but that you already knew.
You'r idea for a video is very good, but if the email itself is just being sent with no prior engagement from the client it will be considered SPAM in no time.
Here's my idea: why don't you create a simple landing page, using that same video, to show your clients what your company is all about, and make a "call to action" button or mailing list request so they can already engage with your brand.
If you think you're more efficient selling over the phone, make them call you or request a call back at the end of the movie.
The movie itself isn't the hardest part, that's why my BID is that low, but the engagement part and how you'll make or in other words CLOSE the client is...
Hope to hear back from you soon so we can have a chat.
Cheers, Miguel