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Convert DTS audio to Multi Channel MP3?

Discussion in 'High resolution audio' started by Dss_cottage, Feb 15, 2015.

  1. Dss_cottage

    Dss_cottage Newbie

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    I have an SACD disk with DTS audio and I'd like to convert the audio to a multi channel MP3 file.

    I've read that multi channel MP3 exists but I've never seen it. First, does it really exist?

    I've demuxed the SACD to get a DTS audio file and I've tried many audio and video converters in an attempt to get multi channel MP3 files but all I can get is 2 channel MP3s.

    Is there any way to do this?

    I'm not married to the MP3 format. I just want a format that will play on media players (iPod and WDTV).

    Is this possible?
     
  2. attar

    attar Senior member

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    Audio isn't my line, so in saying I'm not familiar with multi-channel mp3 is no surprise.
    I have converted six channel dts to 6 channel ac3 (can the wd player support that?).
    Normally use command line programs like eac3to (eac3to input.dts output.ac3 ).
    or ffmpeg (ffmpeg -i input.dts -acodec ac3 -ac 6 -ab 448k output.ac3)
    Believe DaudioK which is a GUI will handle it too, but I know it won't output multi-channel mp3.
     
  3. scorpNZ

    scorpNZ Active member

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  4. Dss_cottage

    Dss_cottage Newbie

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    Thank-you attar & scorpNZ,

    Yes. ac3 can be played on the WDTV and I was able to do the conversion using iDealShare VideoGo. However, ac3 can not be played on the iPod Classic. If possible, I'd like to convert to one 5.1 format that can be played on both the WDTV and iPod Classic. (I'm aware that I'll only get stereo on the iPod headphones)

    I'm still looking for a program that can convert from a dts 5.1 file to an MP3 5.1 file. (I'm not having much luck Googling MP3 5.1.) Suggestions?
     
  5. attar

    attar Senior member

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    There's a CLI from Russian site that is supposed to be able to convert six channel wav to mp3s.
    I gave it a sample file and it converted - but since I have no way of testing the surroundy part - except that is plays back ok on my stereo, I can't say that it works as promised.
    From what I read, mp3s lists as 2 channels, but contains information that can be reproduced on suitable equipment.

    http://audiophilesoft.ru/load/coders_utils/fraunhofer_mp3/7-1-0-84

    Command line:
    mp3sEncoder.exe -if vts.wav -of vts.mp3s -br 0 -m 1

    Source and converted sample:
    http://www.mediafire.com/download/jbj9cp8zl28pp4r/test.zip
     
  6. Dss_cottage

    Dss_cottage Newbie

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    attar,

    I looked at your converted MP3 file and it is 2 channels.
     
  7. scorpNZ

    scorpNZ Active member

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    Mediainfo says 6 channel @ over 4000 bitrate
    whats the prize for guessing the movie it came from ? Doctor: what ! iguana's don't swim. lad: These ones do !

    edit: yeah that's definitley multi channel alright a stereo mp3 wouldn't need that much amplification so i can hear it
     
  8. Dss_cottage

    Dss_cottage Newbie

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    scorpNZ,

    OK. What am I doing wrong.
    When I check the files in Mediainfo, here's what I see:
    WAV file - 4234 Kbps - 6 channels
    MP3 file- 128Kbps - 2 channels

    Unless I'm mistaken, the original 6 channel WAV file was converted to a 2 channel MP3 file.

    I'm looking to convert a 6 channel dts file to a 6 channel MP3 file.
     
  9. scorpNZ

    scorpNZ Active member

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  10. attar

    attar Senior member

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    Try the Aud-X codec.
    I encoded the 6 channel wav file to mp3 using it, then decoded that same mp3 back to six wavs, so the information must be in the mp3 somewhere.

    http://www.videohelp.com/tools/Aud-X
     
  11. Dss_cottage

    Dss_cottage Newbie

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    I converted my 5.1 dts file to a 5.1 ac3 file and then used Aud-X, to convert the ac3 file to 5.1 MP3 but I got a mono MP3.

    Interestingly, as I was playing around, I used Aud-X to convert the converted mono MP3 to a 5.1 ac3 file. Mediainfo shows it as 5.1 but it may just have the mono channel duplicated in each of the 5.1 channels.

    Anyway, I can't seem to get a conversion to MP3 5.1.

    Aud-X has no help file and their web site is deactivated.
     
  12. scorpNZ

    scorpNZ Active member

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    You may have to bite the bullet & either use compatible stereo for both or encode highest bitrate ipod can handle & 1:1 for wdtv
     
  13. attar

    attar Senior member

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    Open that file in Audacity and see if it matches the original DTS/ac3
     
  14. Dss_cottage

    Dss_cottage Newbie

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    Interesting!
    Just to be complete:
    1. I converted my 5.1 dts file to a 5.1 ac3 file
    2. I used Aud-X, to convert the ac3 file to 5.1 MP3 but I got a mono MP3 (as per Mediainfo)
    3. I used Aud-X to convert the converted mono MP3 back to a 5.1 ac3 file (as per mediainfo it shows it as 5.1)
    4. I loaded the ac3 file from step 3 into Audacity and it is 5.1 and the individual channels are different.
    5. I also loaded the mono MP3 file from step 2 into Audacity and it is mono.

    This seems strange to me.

    However, I'm still not getting a 5.1 MP3 file.

    Unless there is an elusive "silver bullet", it looks like I'll have to convert the original 5.1 file to 2 different formats one for the WDTV and one for the iPod. It's not the end of the world - just an inconvenience. (Plus I just wanted to know how to make a 5.1 MP3.)
     

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