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:
 
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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== Windows instructions ==
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== Required Software ==
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'''MP4, AVI, MOV, and TS files containing AC3 and AAC audio'''
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* [http://www.squared5.com/ MPEG Streamclip]
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#Download and install this software called YAMB http://yamb.unite-video.com/
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* [http://audacity.sourceforge.net/download/ Audacity]
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#Clicking on ''Editing > Click to extract streams from AVI/MP4...''.
 
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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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'''TS, MTS, M2TS, and MPEG2 files containing AC3 audio'''
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== Optional Software ==
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#Download and install this software called TSMuxerGUI http://www.videohelp.com/tools/tsMuxeR
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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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#Open the first video file by clicking on ''Add''.
 
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#Uncheck everything except the audio file. The audio file may be one of the following formats AC3, WAV, MP3
 
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#*'''IMPORTANT:''' If the file contains an AAC stream (in TSMuxerGUI this will appear as "MPEG-Audio"), please use the YAMB method detailed above as this method may result in corrupted AAC streams that do not play correctly in iPhones.
 
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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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== Mac instructions ==
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== Instructions ==
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'''MP4 and MOV files'''
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'''TS, MTS, M2TS, MOV and MPEG files containing AAC audio'''
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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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# Open the video in [http://www.squared5.com/ MPEG Streamclip]
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#Open the video file in SimpleMovieX.
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# Click on File > Save Track > Save Audio Track
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#Click on Edit > Separate Tracks to separate the audio from the video.
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# Save as MP4 (if this gives an error, you probably recorded the audio in PCM)
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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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# Rename the extension to M4A
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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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#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)

Revision as of 10:49, 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:

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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