hello nice question ,my advice is to visit your area developers and contact to marketing or sales department and check their website or social media handle what kind of video they are posting and according to that you can check what kind of video and tools they are missing to reach audience and you can make bullet point and express your thought plz don't lose hope it will take time but it will work make small project from your side and you can show them what best you can do if as gesture to win the trust of client do something for free also to make relationship i wish you gud luck