Difference between revisions of "Extracting Audio from Video"

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If you have an audience video recording with great audio, and you want to share the audio in its original quality without having to upload massive video files, here's instructions on how you can extract only the audio from the video:
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If you have an audience video recording with great audio, and you want to share the audio in its original quality without having to upload massive video files, here's instructions on how you can extract only the audio from the video using some simple tools.
  
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'''Windows instructions for MP4/AVI/MOV/TS files containing AC3 and AAC audio'''
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Note: I have also written some batch scripts that will automate some of these processes. You can find them here:
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#Download and install this software called YAMB http://yamb.unite-video.com/
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* [[BatchConvert|BatchConvert for PC]]
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#Clicking on ''Editing > Click to extract streams from AVI/MP4...''.
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* [[BatchConvertforMac|BatchConvert for Mac]]
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#Click on the ''Folder'' icon next to the ''Input'' field.
 
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#If audio stream is
 
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#*AAC format, click to highlight the AAC file, make sure ''Extract to Raw Format'' is selected;
 
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#*AC3 format, click to highlight the AC3 file and make sure ''Extract Audio Stream'' is selected.
 
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#Select ''Next''.
 
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#The resultant file is the audio of the video in its original quality.
 
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#Repeat steps 1-6 for the rest of your videos.
 
  
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'''Windows instructions for TS, MTS, M2TS, MPEG2 files containing AC3 audio'''
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== Required Software ==
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#Download and install this software called TSMuxerGUI http://www.videohelp.com/tools/tsMuxeR
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* [http://www.squared5.com/ MPEG Streamclip]
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#Open the first video file by clicking on ''Add''.
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* [http://audacity.sourceforge.net/download/ Audacity]
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#Uncheck everything except the audio file. The audio file may be one of the following formats AC3, WAV, MP3, AAC (in TSMuxerGUI this may appear as "MPEG-Audio").
 
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#Select the ''Demux'' radio button.
 
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#Click ''Start Demuxing''.
 
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#The resultant file is the audio of the video in its original quality.
 
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#Repeat steps 1-6 for the rest of your videos.
 
  
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== Optional Software ==
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* [http://mediainfo.sourceforge.net/en Mediainfo] (this will help you find out the format your files have been encoded in)
  
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'''Mac instructions (works only for MP4 and MOV files)'''
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== Instructions ==
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#Download and install this software called SimpleMovieX (Free, trial version will work) http://simplemoviex.com/SimpleMovieX/index.var
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'''TS, MTS, M2TS, MOV and MPEG files containing AAC audio'''
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#Open the video file in SimpleMovieX.
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# Open the video in [http://www.squared5.com/ MPEG Streamclip]
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#Click on Edit > Separate Tracks to separate the audio from the video.
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# Click on File > Save Track > Save Audio Track
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#Select the audio track, then go File > Save As (MPEG-4). This will produce an audio MP4 (or MOV if the MPEG-4 option isn't available).
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# Save as MP4 (if this gives an error, you probably recorded the audio in PCM)
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#Rename the file extension from MP4 to M4A and the file should play in iTunes (this step only applies to files whose output is mp4).
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# Rename the extension to M4A
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#Repeat steps 1-5 for the rest of your videos.
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'''TS, MTS, M2TS, MOV and MPEG files containing AC3 audio'''
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# Open the video in [http://www.squared5.com/ MPEG Streamclip]
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# Click on File > Save Track > Save Audio Track
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# Save (this will generate an AC3 file)
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'''TS, MTS, M2TS, MOV and MPEG files containing PCM audio'''
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# Open the video in [http://audacity.sourceforge.net/download/ Audacity]
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# Click on File > Export to Other Formats > OK
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#* If you recorded the audio as 16 bit PCM audio:
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#*# Select Format as "WAV (Microsoft) Signed 16 bit PCM"
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#* Else, if you recorded the audio as 24 bit PCM audio:
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#*# Select Format as "Other compressed files"
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#*# Click Option
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#*# Make sure Header is "WAV (Microsoft)" and Encoding is "Signed 24 bit PCM"
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#*# Click OK
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# Save (this will generate a WAV file)

Latest revision as of 11:53, 29 June 2012

If you have an audience video recording with great audio, and you want to share the audio in its original quality without having to upload massive video files, here's instructions on how you can extract only the audio from the video using some simple tools.

Note: I have also written some batch scripts that will automate some of these processes. You can find them here:

Required Software

Optional Software

  • Mediainfo (this will help you find out the format your files have been encoded in)

Instructions

TS, MTS, M2TS, MOV and MPEG files containing AAC audio

  1. Open the video in MPEG Streamclip
  2. Click on File > Save Track > Save Audio Track
  3. Save as MP4 (if this gives an error, you probably recorded the audio in PCM)
  4. Rename the extension to M4A

TS, MTS, M2TS, MOV and MPEG files containing AC3 audio

  1. Open the video in MPEG Streamclip
  2. Click on File > Save Track > Save Audio Track
  3. Save (this will generate an AC3 file)

TS, MTS, M2TS, MOV and MPEG files containing PCM audio

  1. Open the video in Audacity
  2. Click on File > Export to Other Formats > OK
    • If you recorded the audio as 16 bit PCM audio:
      1. Select Format as "WAV (Microsoft) Signed 16 bit PCM"
    • Else, if you recorded the audio as 24 bit PCM audio:
      1. Select Format as "Other compressed files"
      2. Click Option
      3. Make sure Header is "WAV (Microsoft)" and Encoding is "Signed 24 bit PCM"
      4. Click OK
  3. Save (this will generate a WAV file)
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