.mpg - demultiplex (take audio out of .mpg)

Discussion in 'Amateur Video Production' started by AndrewC, Jan 31, 2006.

  1. AndrewC

    AndrewC Guest

    Greetings again all.

    I made the posting below many moons ago, however I never followed up on
    trying to create a separate audio file (.mp3 or .wma) to put on my mp3
    player until now. I have VideoRedo plus, but I could not figure ou how
    to use it as Ken recommends below.

    If there is another program, preferably inexpensive, then please let me

    Thanks in advance.


    Just set VideoReDo's output default to ES. Then Drag&
    Drop your MPEG onto VideoReDo, four clicks of the mouse,
    and you are done.

    You could get a MP3 recorder/player, and plug into any
    spare audio out of your TV receiver/cable box/Tivo/ Satellite
    box/ VCR/ whatever. If necessary you could use "Y cables"
    on an available audio path.

    AndrewC, Jan 31, 2006
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  2. AndrewC

    Ken Maltby Guest

    OK, if you want I can walk you through the steps, with
    VideoReDo. That was a description of how to extract
    the audio from a .mpg file. You would then have to convert
    whatever it was to .mp3 or .wma if that is what you want.

    Another way to do it is with VLC the Virtual Lan Client.
    But to do it you need to follow instructions precisely and make
    an effort to complete the task.

    1. Start the "VLC media player".

    2. Click on Ctrl-F (or the "File" tab and select "Open file...")

    3. Click on the "Browse" button and find the .mpg you want
    to extract the audio from. Double click on it.

    4. Put a check mark in the "Stream output" box. Then click on
    the "Settings..." button next to it.

    5. Put a check mark in the "File" box under "Output methods".
    Then use the "Browse..." Button to find the folder you want to
    put your .wav file into. Enter the file name you want with a .wav
    extension. Click on the "Save" button.

    6. Put a dot in the circle next to "WAV" in the "Encapsulation
    Method" box.

    7. Put a check mark in the "Audio codec" box in the "Transcoding
    options" box. Use the dropdown arrow to select "s16l".

    8. Click on the "OK" button.

    9. Click on the "OK" button at the bottom of the page now displayed.

    VLC will now make the 16 bit Stereo .wav file. You can feed that to
    the free "Audacity" ( You may need to install a MP3 codec ) or you
    can download the free "Windows Media Encoder" and encode to wma.

    Ken Maltby, Jan 31, 2006
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  3. AndrewC

    AndrewC Guest

    Thank you Ken. Could you walk me throught the videoredo process? What
    type of audio file will it create? What would I use to convert that
    audio file to .mp3 or .wma?

    AndrewC, Feb 1, 2006
  4. AndrewC

    Ken Maltby Guest

    VideoReDo can provide MPEG ES (a program stream broken
    into a video stream .mpv and the audio stream .wpa (for MPEG 1
    layer 2) .AC3 or .wav (for LPCM). It also has an output option
    to change the audio encoding. Audacity can convert the .wav or
    ..mpa files to .mp3, but it doesn't recognize .ac3 files. So there is an
    additional step for extracting the AC3 audio.

    1. Open VideoReDo with the .mpg

    2. Click the "Save As..." button. Click "Yes"

    3. Use the dropdown arrow to select "Elementary Streams
    (*.mpv and *.mpa) in the "Save as type:" box.

    3a. If it is AC3 audio, click on the "Options" button and use
    the dropdown arrow in the "Encoding" box ; to select "LPCM/
    WAV". Ignore the Bit Rate box.

    4. Click the "Save" button.

    Now you have files that Audacity and other programs can
    convert to MP3.

    If you are running a Windows OS you can convert the .wav files
    to any installed and registered codec using the built-in "Sound
    Recorder accessory". (If you want to work with MP3 and audio
    in general you should download and install the free Lame encoder/
    codec. Just Google "Lame MP3")

    In XP, if you right click on a .wav file you should find a "Record"
    selection listed.

    1. Select that then click on the "File" tab and select "Properties".

    2. Click on the "Convert Now..." button in the "Format Conversion"

    3. Select the "Format:" using the dropdown arrow then select the
    format's "Attributes:" to match your needs. Click on the "OK" button.

    4. Now, use the "File" tab to "Save As..." a file name with an extension
    to match the file type you converted to. (.mp3)

    If you want to be making Windows Media (.asf .wma .wmv) you
    might want to download the "Windows Media Encoder" from
    www.windowsmarketplace.com , just type "Windows Media Encoder"
    into the search box.

    Ken Maltby, Feb 1, 2006
  5. AndrewC

    AndrewC Guest

    Thank you VERY much Ken.


    AndrewC, Feb 1, 2006
  6. AndrewC

    RS Guest

    Aaaah, another satisfied customer....
    RS, Feb 1, 2006
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