Corrected entry: Near the end, when Hermione leaves Harry to talk to Sirius in the castle, as she moves out of frame you can hear her saying "Don't help me" or something similar, presumably to a cast member. (02:03:45)
Corrected entry: When Professor Snape caught Harry missing the curfew, Professor Lupin came to intervene and save Harry from being punished. Lupin also took a parchment, the Marauder's Map, before Snape could confiscate it and asked Harry to come to his office. In his office Lupin mentioned to Harry that the map was a weapon for Sirius Black but he never asked Harry what is hidden inside the parchment nor did Harry ever mention a word about the map. Obviously Lupin should have had no knowledge about the Marauder's Map if he have never even heard anything about it. (01:17:40)
Correction: Lupin was one of the people who MADE the Marauder's Map (he was the "Mooney" in "Mooney, Wormtail, Padfoot and Prongs).
Already knowing what it is would be really suspicious. I mean, if he didn't want anyone to know he made the map or even what it is, he would probably want to pretend and say something along the lines of "what is this".
Corrected entry: In the Shrieking Shack, just after Scabbers becomes Pettigrew, when Sirius and Lupin pull him out of the hole, as the camera faces Pettigrew's back while they hold him, the blue tape on his 'missing' finger is visible for 2 frames. (It is necessary to go frame-by-frame.) (01:31:30)
Correction: The mistake might be correct, however, if it's necessary to go frame by frame to see it, it shouldn't be admissible as a mistake per the guidelines.
Corrected entry: In Chamber of Secrets and The Philosopher's Stone, the Fat Lady's portrait is located in a hall near no stairs. In this movie, the portrait is located on the stairs.
Correction: That's a conscious choice by the filmmakers - several things change around between the two/three films due to them having different views on how they want the scenes to look (most prominently the location of Hagrid's hut). But if one is to be pedantic about it; the portrait is a painting. It can easily be taken down and moved to a different location.
It's easy to say that the portrait could be moved, but it is the exact same entrance into the dorms as the first 2 movies.
Corrected entry: In the very beginning, Harry is performing the Lumos spell in his bedroom. He's underage, therefore he should be well aware that he's breaking the secrecy rule and should have been alerted to the Ministry, yet they only take notice of him when he 'blows up' his aunt.
Correction: They only intervene when he blows up his aunt, but that doesn't mean that they didn't notice when he used the Lumos spell. Regardless, the Ministry is shown to have discretion in these matters. Harry gets into trouble for blowing up his aunt because there are Muggles present, thus violating the Statute of Secrecy. The same applies in Order of the Phoenix, when he uses the Patronus charm with Dudley present. A student using a low-level spell with no Muggles present, thus not breaking the secrecy regulations, in a manner that clearly indicates that they're practicing, is not going to worry the Ministry.
I would add that it's probably a homework assignment that he is allowed to do.
Corrected entry: When the Dementors are boarding the train, everything starts to go cold, so much so that the water on the windows starts to freeze, and even more noticeably the water in the bottle completely freezes. Once the Dementors have gone, the windows are completely free from ice and the water in the bottle has melted again. This is not possible in the short space of time that passed.
Correction: Neither water nor windows can freeze that fast either. Dementors are magic creatures, and have magical effects on their surroundings.
Corrected entry: After Professor Lupin confiscated the Marauder's Map from Harry Potter, Harry told Lupin that he saw Peter Pettigrew's name on the map. Although both Lupin and Potter did have their own knowledge about Pettigrew, Lupin was his friend and Potter learned from overhearing the conversation between Professor McGonagall, Madame Rosmerta and Cornelius Fudge, there was no indication that they ever had any conversation about Peter Pettigrew. Lupin's reaction to Harry's revelation was rather odd because he looked worried instead of surprised that Potter already had some information about Pettigrew. Potter himself also seemed really familiar with the name rather than showing any indication of curiosity about Pettigrew. Such a profound discovery should have made him question Lupin about the nature of the finding rather than just walking away from his office. (01:18:45)
Correction: First of all, Lupin and Harry needn't have had any conversations regarding Pettigrew, Lupin knows that Harry could easily have already found out about the infamous circumstances surrounding his parents' deaths. When Harry tells Lupin he saw Pettigrew's name on the map, Lupin's immediate reaction is not about how Harry knows the name Pettigrew, but rather the more important issue of Pettigrew's name actually being on the map, because the map doesn't lie. The fact that Harry chooses not to question Lupin about Pettigrew is a deliberate decision Harry makes when Lupin admonishes him. He feels guilty especially after his experience in the corridor when the map 'falsely' indicated that Pettigrew was passing him. There is no factual, or any other kind of mistake, regarding Harry's or Lupin's behavior.
Corrected entry: When Harry is riding Buckbeak for the first time over the lake, the sun is at their left but in the last shot when Buck turns right, the sun is now at their right.
Correction: After Buckbeak and Harry fly out of the paddock and towards the castle, there's an overhead wide shot of the water below and it's clear Buckbeak does not fly in a straight line, he's following the path of the water with numerous twists and turns. The sun's position changes with Harry's "Woo hoo!" in the first shot, followed by more loud screams in the 2nd shot, and then in the last shot, with another "Woo hoo!" From shot to shot, these are not one long continuous scream and since Buckbeak is turning with the path of the lake, it is obvious that their direction is changing as they fly over the water. Each of the consecutive shots as they fly is not their entire flight, as is even apparent in the next two shots when Buckbeak is back near the paddock already.
Corrected entry: When Harry and Hermione watched their past selves from the wood, there were some scenes where events happened too fast in second scenario. They see Lupin say "Immobilis" and the Whomping Willow stops moving, then just a few seconds later they see Snape coming. But the first time, Snape arrives in the Shrieking Shack few minutes after Lupin. Also Lupin transforming into a werewolf is too short in the second scenario. Hermione howls a few seconds after he changes, but the first time, Lupin transforms, then he fights with Sirius for about a minute.
Correction: The second time we see all these scenes, i.e. when Harry and Hermione have gone back in time, we aren't seeing them in real time. The director has displayed the scenes differently to the audience, in order to underscore that they are now shown from a different perspective (time-traveling Harry and Hermione's). This was an artistic choice by the filmmaker, not a film mistake.
Corrected entry: When the dementor leaves the train you can see a person's face.
Corrected entry: Harry's wand looks completely different to the one in the first two movies.
Correction: The director has artistic license to change things the way he sees them. Hogwarts robes, geography, etc. are different in each of the films. Not an error here.
Corrected entry: When the Knight Bus slows down before the two double-deckers, you can see them and the other traffic around it slow down noticeably as well. The other vehicles also speed up when the Knight Bus does.
Correction: Clearly, the bus is altering the flow of time around it to give it time to make its squeeze. It wouldn't make much sense to slow the Knight bus down only to have all the surrounding traffic slam right into it.
Corrected entry: When Dumbledore is studying the slashes on the portrait of the Fat Lady, you can see, especially well when the light shines on it, that the actual paining is extremely smooth. But a real paining would have at least some trace of paint brush strokes.
Correction: A real painting probably would. An enchanted painting in a school of witchcraft and wizardry might not.
Corrected entry: When Molly Weasley, the mother, is running with Ron's rat to take it to him on the train, she shouts 'RON, RON' and then if you listen closely, she says 'Rupert' which is the actor's name. (00:18:10)
Correction: She does NOT say "Rupert." She yells "Ron" several times, then she calls out "Ron" once more but it's rather elongated (Rr-oo-nn). It's definitely not Rupert.
Corrected entry: When Harry, Ron and Hermione are going to Hagrid's hut before Buckbeak's execution they walk past McNair, the executioner, sharpening his blade in the courtyard. Harry and Hermione run through the courtyard again after going back in time and they pass right by McNair for a second time. Just prior to this Hermione told Harry they "must not be seen". (01:48:10)
Correction: Hermione means they cannot be seen at the same time as the 'other' Hermione and Harry by anyone who knows them. McNair does not know either Harry or Hermione, and he is busy sharpening his axe. He would hardly notice what students were running about. Anyway, it's a chance Harry and Hermione have to take in order to get to Hagrid's hut.
Corrected entry: In the scene where Snape takes over the Defense against the dark arts class, (about werewolves) when the projector changes slides, on the screen the image moves clockwise at the top. However, when you see the projector, the light enabling a picture to be projected is on the bottom and the slides rotate counter clockwise.
Corrected entry: During the first patronus scene we clearly see a stag, but in the second scene, when the shot changes to a wide view of all the river, we don't see it. (00:55:25)
Correction: The two scenes are from completely different angles.
Irrelevant. We see a long shot the second time and there is still no stag.
Corrected entry: Just after Harry and Hermione rescue Sirius, they proceed to enter the clocktower from the courtyard; however, just after they enter the doorway and disappear, a figure can be seen in the doorway that hovers for a second, then shrinks, and moves to the side.
Correction: As the camera pans upward, we see Hermione, followed by Harry, run through the cathedral-style archway, and once they enter the lit doorway within, first Hermione turns to the right and then Harry turns to the right, so both are gone from view at this point. It is Harry who is the "figure...seen in the doorway" just before he turns to his right.
Corrected entry: Hermione says that Harry wouldn't want to run into himself in the past, that he'll go mad. There have most likely been many instances when something like that would happen, a polyjuice user encountering the sample, for instance. It would probably cause confusion, but it's very unlikely that someone would go insane as a result.
Correction: She meant Harry's past self, who doesn't yet know about time-travel, would. At any rate, it was a figure of speech. Not that he'd just start drooling in his Cheerios with an Aluminum foil hat on his head at the mere sight of himself. Just that his past self's reaction could be dangerous.
Corrected entry: When Harry is going to his room at the Leaky Cauldron, after talking to Fudge, we see Tom walk out of the room with nothing in his hands. In the next shot, he is carrying Harry's books.
Correction: When Tom pushes Harry's chair back and pulls the boy by his shirt, we see the stack of books in the crook of Tom's right arm, just before he walks out the doorway.
Correction: Hermione says, "Down Buckbeak," when she walks out of frame.
Super Grover ★
Why would she say that?
Buckbeak is playful and could be trying to engage with her which she doesn't want to at that time. It is similar to coming up to an excited dog or horse and saying "down boy" or "easy boy."
jimba