There are hindrances to these ways of communicating and also methods or tools to support and enhance them.
Filters & Facial Obstruction
If you use a filter, I cannot see your eyes or your eyebrows, usually. Sometimes your mouth is obscured. If you use a global filter, your entire self is obscured and it might as well be a radio show… on video? And then I totally lose the sense of your words. I don’t see your inflections. That’s the whole point of video, right? To more fully understand each other? I know you are not trying to be rude. Instagram is actually the most accessible place for me, for videos, on the internet.
Lighting & Background
What other things will help with accessibility in videos? Consider your lighting levels. Don’t speak in front of a window. Your face will be in shadow, and that will make it harder to see and understand you. Also consider your background.
A more solid background will help make your face clearer and easier to read. If you are showing a specific item, consider your background. A more solid background is always more helpful, and helps everyone see your item more clearly. Lighting matters too. Backlit will always be more confusing. A simple overall light will usually be best. If it is night time, always turn on as many lights as possible!