I've done that. It seemed like Wired got lost on the road for a while, but lately they're back with a vengeance, which I'm delighted to see (and to support).
Isn't the use of the H.264 motion vector to preserve bit when there is a camera pan? A pan is a case where every pixel in the frame will change, but maybe doesn't have to.
Yes, or when a character moves across the screen. They are quite fine grained. However, when the decoder reads the motion vectors from the bitstream, it is typically not supposed to attach meaning to them: they could point to a patch that is not the same patch in the previous scene, but looks similar enough to serve as a starting point.
IIRC Swift Playgrounds goes pretty deep -- a full LLVM compiler for Swift and you can use any platform API -- but you can't build something for distribution. The limitations are all at the Apple policy level.
My immediate headcannon was: Dedra goes to prison for sedition and builds parts of the second Death Star; is liberated after the death of the emperor; as a (purportedly) rebel-aligned political prisoner is held in esteem (that Loni should have gotten!) She works for the New Republic and rebuilds the police state machinery that ultimately leads to the first order.
Here's a fun fact: in the photo of the Byte Shop, the person in the window with their back to the camera is John Draper, the legendary hacker known as Captain Crunch.
You might like Evan Doorbell's YT channel then – he has a lot of old tapes from his misspent youth traveling the world on Ma Bell's dime, and has posted a lot of videos explaining it all for a generation (like mine) without any frame of reference.
Evan's stuff is excellent and worth watching/listening to.
Shameless plug: if you like his stuff, you might also like my book, "Exploding The Phone", which is a history of phone phreaking. https://explodingthephone.com/
My uncle is Paul Terrell, the owner of that Byte Shop. He showed me the photo and told me who was in the window. But I don't have an independent verification of this -- dunno, maybe Captain Crunch is a lurker here?
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