I've read about meditation, and a consensus I'd seen was that you're not doing it right if you need an external aid. You're supposed to learn to do it on your own entirely.
If by "aid" you mean the video, well, the Pali Canon (the oldest known buddhist meditation writings) talk about kasinas, which are visual meditation objects, though they're not especially popular these days.
And of the "Three Jewels" that support buddhist practice, one is the sangha, which can be translated as community, so it's not always true that meditation should be a solitary practice either..
I think guided meditations like this may be useful for beginners, though that being said, I think no stimuli may be better in the long-run than even soothing stimuli.
Worrying about whether you're doing it right or wrong is much more of a failure than using an unfocussed screen and gentle music/sounds.
If you're good, you should be able to successfully meditate whatever is going on around you. I can (just about) do it on the tube (subway) during my commute.
If by "aid" you mean the video, well, the Pali Canon (the oldest known buddhist meditation writings) talk about kasinas, which are visual meditation objects, though they're not especially popular these days.
And of the "Three Jewels" that support buddhist practice, one is the sangha, which can be translated as community, so it's not always true that meditation should be a solitary practice either..
I think guided meditations like this may be useful for beginners, though that being said, I think no stimuli may be better in the long-run than even soothing stimuli.