This is what I have found out via translating comments on youtube:
Left hand is not hiding anything but a finger nail smacked by a hammer...
OP hints that circuit is AC... AC generatior in the batt clip? States that 9v batt is "ordinary"
5 ma current but states explaination will ruin puzzle...
OP... "But look again and think carefully how many items I really used to build this system?"
OP "The third LED went on my mind for years:)
I managed to modify the battery or not (as the only element of the film shown).
However, the explanation of Usedom, which will provide a sensible systems is hidden in the battery ..."
OP "Don't look at my schematic! Consider, how I can? control these LEDs ? Tip: do you know any AC current properties ?"
OP "The film is not a photomontage., Or computer animation. LEDs light up as a result of current flow, and not through such laser illumination. I understand that negative opinions is a sign of powerlessness of the intellect. Too bad, because I hoped that this arrangement will inspire food for thought"
OP "I used about 200 R. But due to the nature of action, its function is trivial?"
OP "We'll talk and how to draw a diagram can show that you manage to pack it into LEDs"
OK, so does this mean that he "made the LEDs?" A look at the video may suggest yes, he did, as I have not seen bumpy, poorly cast LEDs even from the Whon Hung Lo brands bulk bagged at the swap meets.
So, given the AC supply, the possibility if additional circuitry embedded into the LEDs and probably the switches as well, how?
Chris