Correct me if I am wrong, but it is not so much "reconstruction" as "compression". (Or I got it wrong. Or the description is utterly unclear: reconstruct what f

Correct me if I am wrong, but it is not so much "reconstruction" as "compression". (Or I got it wrong. Or the description is utterly unclear: reconstruct what from what.) If it is the compression case, I am curious for the size of the compressed movie.