Audio problem: Just as McClane and Farrell are about to leave the Eastern Power Hub, Farrell goes on a long rant and his mouth does not match the words he is saying. [In the unrated version of the film, the rant concurs with Will's mouth movements, but the mistake is valid for the regular version.]Joel Amos Gordon
Audio problem: When Troy and Gabriella are singing "Everyday," Troy sings with his microphone away from his mouth numerous times during the scene, yet he is still heard just as well, and not at a lower level, like he should be. (Within the context of the film, this is sung live on stage and is not implied to be pre-recorded.)
Audio problem: Before they leave for Mission City, Lennox tells Keller, "Sir, you gotta figure out some way to get word out..." Then in the next shot, as Lennox shouts, "Let's move!" his mouth stays open - not forming the "m" with his lips to produce the word "move", which we hear very clearly (it looks as if he really said, "Let's go!"). Changes in dialogue are done during ADR and often are not in sync with mouth movements seen onscreen. (01:45:45)Super Grover
Audio problem: In the scene where Doyle, Scarlett and the kids jump into the Volvo estate to escape the gas and infected, a number of references are made to the car having a manual gearbox, i.e. "pop the clutch". Doyle puts the car into second gear and several shots of the gear lever are shown. However, when Doyle push starts the car and they drive off, listen carefully and you will hear the distinct sound of the gear change of an automatic box.
Audio problem: When Damien Blade shows up at the end, he shows up on a motorcycle close to the crowd, right on the main road, yet there's no sounds of a motorcycle pulling up before hand. They would definitely have noticed him pull up and hear his motorcycle coming in way before he stepped off the bike and the crowd parted way.
Audio problem: In the scene where Davey Jones is playing his organ, the sound is backwards to the way it should be. When he hits the lower notes, the sound emitted is actually *higher* than when he hits the higher notes.
Audio problem: When Ben and Jason are talking over the phone, after Jason tells Jonah, "Your mom is already there", we hear Jonah say, "Uncool man," but his lips are mouthing something different. (01:47:05)