Visible crew/equipment: During the scene where Nick and Sam come upon Richard having a midnight snack in the kitchen you can see a small bright whitish reflection of some kind of equipment in the top left (our left) kitchen window, down in the lower right corner. There is no character movement or other scene related explanation for this reflection. It moves and fades during the scene, most dramatically at the end of the scene. (00:37:20)
Continuity mistake: The white Mercedes has a sunroof in some shots, and not in others.
Audio problem: When Galleria is playing the piano by herself at school, it's obvious she really isn't playing. Her hands are moving way too slow for some of the parts and at the end, her hands are playing very low on the bass notes when the notes heard are in middle-low C range.
Continuity mistake: At the Record Label party, where the band meets Bobbi Fleckman, Nigel is wearing a coat. In another shot where the band meets Sir Dennis Eaton Hogg at the same party Nigel has no coat and different shirt.
Audio problem: During the song 'Found A Job' (about 30/60 secs. in?) a cymbal crash can be heard, but the drummer doesn't hit a cymbal. Later on, the error is reversed (drummer hits cymbal but no crash is heard).
Continuity mistake: In the scene where Ken is picking Rita up from school her bookbag is red with 2 triangles on it as they go around the school, after Rita gets on, her bookbag then turns blue with no triangles.
Continuity mistake: At the end of the dress rehearsal, when the policeman looks around the corner, someone's shirt appears on the armrest of Nathe's chair. (01:01:40)
Continuity mistake: When the group goes to the diner after their first class, When Bobby takes off her hair piece clip and puts it back on, at first it's smooth then when the shot changes, it's all messed up.
Continuity mistake: In the "No Problem" scene, Alex lights up a cigarette while waiting for Isaach and then leaves it in the ashtray. Later on, when Isaach finally arrives, Alex offers him a cigarette and lights one for himself. The cigarette left in the ashtray disappears in the next shot.
Other mistake: After the "fat fat fatty" scene, Franz shoots his way in, starting with three bullets into the door lock. Over the next scene he fires about twelve shots, despite the fact he's firing an 8-shot Luger.
Factual error: The phone at the Peacocks house is too modern for the time - the cord going into the handset had a clip in cord versus being attached directly to the piece.
Audio problem: In the scene where Kid N Play are freestyle battling, you hear mixing in the background. But Bilal is not mixing, but in fact watching Kid N Play.
Audio problem: In the scene where Tyler is preventing Whoopi Goldberg from sitting down by asking her stupid questions, there is a part where Frankie says, "Oh you're gonna get jumped after school Tyler." When the word "Oh" is heard, his lips aren't moving.
Factual error: When Buddy and the musicians tour bus is towed to the Clear Lake Auditorium for the final concert before the fatal air crash, the canopy states that the concert is on the 3rd of February. The fatal accident that took Buddy, The Big Bopper and Ritchie Valens occurred at 1am on 3rd February 1959 so the canopy should have read 2nd February.
Continuity mistake: About half way through the movie, the three main characters are in a loft. When the Asian girl grabs the postal worker's jacket, a cassette tape falls out of his pocket. As the girl bends down to pick up the tape, the camera shows here reaching with one hand, and then the camera switches to a close-up of her picking up the tape with the opposite hand.
Continuity mistake: After the love scene with Penelopa, Frankie sits down on the chair wearing a green shirt. In the next shot he is wearing a blue bathrobe.
Factual error: Towards the beginning of the film, the Cashes receive a notice about their rent. It's the 1950's and the address has a ZIP code. ZIP codes were not introduced until 1963.
Character mistake: The Rufus hologram states that he first brought the phone booth to the Chosen Ones (Bill and Ted) in 1989, referencing events of the original film. While that was the year the first movie came out, it took place in 1988 (indicated by the opening title card and dialogue throughout the movie).
Revealing mistake: Towards the end when the Phantom's lair is collapsing, you can see bricks falling into the sewer water and floating. Obviously they were made out of light-weight material and not out of actual stone.
Continuity mistake: When the Bellas just got told that they are not allowed to compete any more they walk outside and Beca gets a call. When the camera is zoomed in on her you see her calling and moving a lot. When the camera is focusing on the other Bellas she is standing completely still in the background. When the camera is back on Beca she is moving again. (00:12:50)