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Signal Processing Mathematica Import and Export Wolfram Language

Can I extract .WAV audio from a .MOV video file?

Posted 12 years ago

I have a 99 minute and 43second .MOV video in ProRes422 720p format which I imported into Mathematica Import["E:\\3180\\3180HDV720p.mov"] The output I got was the following array with 358651 elements. Out[] = {1,2,3, 358649,358650,358651} I hope to be able to extract the accompanying audio as a .WAV file. Can I do this in Mathematica? If not, can anyone tell me what I can do with this file using Mathematica? Thank you Michael

POSTED BY: Michael Lyda

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Posted 12 years ago

I think one way around it is to use ffmpeg(windows) or avconv (linux) (http://www.ffmpeg.org/) in Mathematica Run[ffmpeg i filename.mov filename.wav] then you can use the Import command to load the .wav file data = Import["filename.wav", "Data"] Oren

POSTED BY: Oren Sternberg

Posted 12 years ago

Please take a quick look at the documentation for this file format in the documentation: http://reference.wolfram.com/mathematica/ref/format/QuickTime.html Running Import without additional arguments only returns a list of names of the frame indicies in the movie. You have to provide a second argument to Import that tells it what to import. For example, Import["ExampleData/clip.mov", "ImageList"] produces a list of of images based on the frames of the video. I don't see anything in the documentation that allows you to export or import the audio for this filetype.

POSTED BY: Sean Clarke

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