Audio problem: When Katniss kills Marvel with her bow and arrow when she's with Rue, the cannon (which goes off when a tribute dies) doesn't fire. This happens a couple of other times in the movie too. (01:25:25)
Suggested correction: This isn't a mistake. First the cannons never went off immediately as evidence by the fact that after the initial battle when tributes were killed, they don't go off until Katniss got away. Then 6 went off in a row. The people in charge of the games decide when they go off. Plus, after Rue is killed, the audio cuts from all sounds of the arena for dramatic effect. The cannons could have gone off then. Or they could have gone off during the District 11 riot.
Audio problem: When Heather is reading her dads note in the car to Silent Hill, the letter and the voice over do not match. (the second paragraph starts off by saying: "But you desire" and the last word right before "I love you" is "place" but through out the reading you do not hear those words.
Audio problem: Hoyt goes up the stairs and there is a dog called Billy that won't stop barking. Just before Hoyt goes into his apartment, the dog's mouth stops, but you hear one more bark before the shot changes to inside where the barking continues to be heard. (00:47:50)
Audio problem: At the casino bar, Bond is talking to Severine. The camera angle switches behind Bond and he says "I'm guessing he was your way out" but his mouth doesn't move. The angle switches to facing Bond and you can see the side of his face move on his next line.
Audio problem: As Dr. Ratha says to Dr. Connors, "The clock is ticking, Dr. Connors", his lips do not match what he says and are still moving shortly after he finishes speaking.
Audio problem: When Katrina's talking to List when he's sitting in the car before the race, her mouth moves but no sound comes out. You can see she's meant to say his name.
Audio problem: After Abrar is shot, his wife starts to shout and runs to grab a weapon. When she does, the angle changes while she looks at the Navy Seals, her mouth is closed, but her previous cries keep on sounding. (02:09:40)
Audio problem: When Emily picks up the tooth from the box, she says "ew" but if you look in the mirror her lips don't move.