There are several reasons why you might need a standalone audio file (usually in .AC3, .EAC3, or .DTS format) for this film:

If you download the Prisoners English audio track separately, you may need to use a tool like to "remux" the audio with your video file.

You may have a version with highly compressed audio and want to swap it for a high-fidelity 5.1 surround sound track.

For the best experience, the most straightforward way to enjoy Prisoners with its original English audio is through licensed streaming platforms like , or by purchasing the official Blu-ray.

The most reliable source for high-quality English audio (DTS-HD Master Audio or Dolby Digital 5.1).

You want to add the original English track to a foreign-language copy of the film.