Why is audio so often out of sync when the actors are filmed from behind?

Why is audio so often out of sync when the actors are filmed from behind? - From above dreamy young female in casual wear lying on floor with eyes closed and hand behind head while listening to vinyl record player

I've noticed that in almost every TV show or movie I've ever seen, the audio does not sync up with the actor's jaw/mouth movements when the actor is being filmed from behind. It looks as if the actor is saying something completely different than the audio I hear. It's shocking how universal it is - pick any live-action content and you'll see it at least 90% of the time. Reality shows, comedies, action, it doesn't seem to matter, they're all affected. It's worst in quick cuts. Why is this?


Best Answer

Because the sequences are edited. You may be watching an edit assembled from several takes and entire lines of dialogue may be omitted at the editing stage.

On some shoots, there may only be one camera. This means the scene has to be shot from one angle, performed multiple times, then the reverse shot set up, performed multiple times and an edit assembled, usually from the preferred performances, but sometimes combining different takes if there are any problems.

The use of cutaways and “noddies” - nodding interviewers - is a telltale sign of editing in interviews that most people don’t notice, but once you’re aware of how video is put together, you notice it all the time.




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Why is audio so often out of sync when the actors are filmed from behind? - Dreamy woman lying on floor near vinyl record player
Why is audio so often out of sync when the actors are filmed from behind? - Top view dreamy young female with red lips wearing casual wear lying on floor with eyes closed and hand behind head and listening to vinyl record player
Why is audio so often out of sync when the actors are filmed from behind? - Relaxed woman listening to vinyl player and lying on floor



Why does video lag behind audio?

If there is too much data to process when streaming, generally the video gets processed slower than audio. The result is audio encoding first, and the video lagging behind, i.e., hearing your audio first and then seeing the video catch up.

Why is video and audio out of sync?

There are several circumstances that can cause the audio and video on your TV to be out of sync, including the following: When watching a TV program, it could be the broadcast itself or a bad connection between your cable/satellite set-top box.

Why don t the lips match the sound on my TV?

One common problem people encounter when watching TV is the audio and video not matching up. Some audio-video inconsistencies might be because of a common problem called lip sync. Lip sync is the difference in timing between what someone says on screen and what you hear as sound.

How do I fix audio not matching videos?

1. Try These Easy Solutions
  • Restart your computer. If you haven't shut down your computer in a while, you should restart it. ...
  • Restart the app. Try closing the multimedia player and launching it again if you notice the audio and video are out of sync. ...
  • Check how many system resources you are using.





  • Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

    Images: Victoria Borodinova, Victoria Borodinova, Victoria Borodinova, Victoria Borodinova