Many businesses are still carried out by word of mouth. Who do you know who made the video and what can they tell you? If you attend regular networking meetings, ask there. You can also look for the best video production company in Boston through various online sources.
Look at your competitors. If they're using a video, see if you can find out who made it. Some video production companies specialize in certain types of clients or industries.
Google is definitely an excellent place to find out who's there. If you know you're looking for "talking header videos" or animated videos, you can be very specific with your search.
Every video production company that's worth the money has a current event where you can get an idea of the nature of their work – for example, if you're a clothing supplier, it would make more sense to work with a company that's experienced it. As you'll find, there's a lot of work behind the scenes to ensure a successful shoot, so it makes sense to engage a company with at least some experience.
Talking is good
Personal relationships are important. Now that you've spoken to maybe 2 or 3 companies and they have your resume, you can get a real picture of how they work by chatting on-demand and seeing what ideas come up.
There are hundreds of creative ideas and ways you can use to explain your story, what matters is a sense of realism in what is required and will get the job done at a reasonable price.
Find out about their process and how they plan their video production and their willingness to stick to a schedule. That alone can tell you a lot. Capturing video production is no different than any other form of project management.