Oh wow!, when is this releasing and where? HBO Max or blu ray?
Not at all. Some of those scenes were alternate takes that weren’t consistent with the source. Some were just test images that were rejected by the director before the effects were even finished. Heck, some of the scenes I haven’t even heard they ever filmed.
I’m nearly a year late responding to this, but never in my time as a casual Harry Potter fan have I heard this claim regarding the unreleased footage. I’m not trying to argue with you, Doc, but I believe the scenes I mentioned last year exist somewhere in the WBD vaults. I could be wrong, but who knows? 😁
Movies aren’t made by the original author writing the script, handing it to the director who films it as written and the actors recite the dialog word for word.
There are always alternate takes, changes in dialog, ad libbing, multiple revisions to scripts, etc. Hours and hours are filmed for any movie, but all the footage isn’t intended to be used for one reason or another. As such, they don’t necessarily spend money on vfx for that footage.
Heck, it’s one of the reason some movies are on hold right now with the writers strike; changes in dialog while filming is considered writing in most cases.
I’m not saying the footage doesn’t exist (it probably does) or has been destroyed. I’m saying it doesn’t necessarily belong in the movies.