Looking to spitball discussion on the feasibility of AI encumbered codecs (I know this is an ironic forum to ask the question in).

Bascial audio/video codecs that include in their licensing restrictions of use for/transcoding to other formats for use in AI training. If music/videos were ONLY released in this format would it be possible to encumber (legally encumber, not technically encumber) all downstream transcoding of those works from being used in AI training?

I'm not sure that it matters. The major video distributors will not agree to distribute your videos if they have a restrictive license attached since they're exactly the players that want to train AI on those videos.

You'd have to create a legally binding license for media and then also build out a distribution network for it.

And even then, I don't think you would prevent AI from being trained on the videos. The players involved are either big enough to violate the law and ask forgiveness after the fact or in countries where US IP law matters very little.