A good highlight to an ambiguous question! Which knowledge, exactly, is not being made available?
But let's say that an MPG format specification is available. Even other code examples of interacting with an MPG file. But no examples, no library, no documentation on specifically how to extract a subset of one file into another file.
I would think a competent programmer could figure that out. Perhaps an AI tool could also; I have not yet seen an example of it doing so, but perhaps it could.
Of the handful of questions I asked, this might be the least interesting one. More generally, can AI tools advance the state of the art?