Well, I’m not a wizard so I can only talk from the point of view of what is “common knowledge” You know, as a consumer.
You’ve actually got a couple truly “popular” technologies for video recording and transmission. Crystal Balls and Mirrors. Crystal balls store 3D moving images within the lattice structure of the crystal itself. Thus, the bigger the crystal, the more footage it can hold, and they hold a lot. Mirrors also have crystals to store stuff in, but they’re smaller gems usually in the handle or the back of the mirror. Being smaller they have less capacity, and mirrors being flat, they can only record 2D video. Crystal balls being spheres they can record in a 360 degree range (Except where the baller’s hands are).
Apparently the store the data digitally in the crystalline lattice by creating “holes” of some sort. It’s sort of Alchemical in nature and I’m not an alchemist so I can’t explain it very well.
As far as Flying Carpets, those are made by Enchanters who are experts in manipulating the element of Air. But basically they create a higher pressure region below the carpet than is above the carpet and this pushes it up. They can then sort of “tilt” those pressure zones below the carpet, or for finer control, versus curled up parts of the carpet, to push it along in the direction they want to go.
You can see this more clearly if you follow carpet racing. You know how when you are watching a carpet race and they are booking along at break neck speed and all the carpets are tilted with their back end much higher then the front end and sometimes the carpet is sort of shaped like:
/
__+_/
where the + is the driver, that’s to give the air behind the carpet something to push against.
Again, not an Enchanter, or an Aerial Engineer, I fly the old fashioned way on my wings.