Forum Post

  • AdamP (Dolby Labs)

    Hi,

    Dolby Atmos Master files (ADM BWF) are encoded to Dolby Digital Plus JOC (.ec3) or AC4-IMS (.ac4) for packaging and streaming to consumers. A third codec, Dolby TrueHD, is used for Blu-Ray.

    ADM BWF is not directly encoded as AC3 but a 5.1 re-render can be for use on DVD.

    If you need to encode ADM BWF, The Dolby Atmos Renderer can encode to DD+JOC and wrap in an MP4 container which can be used for playback.

    Professional encoding for distribution requires the use of tools like the Dolby Media Encoder or Dolby Encoding Engine. See -
    https://customer.dolby.com/content-creation-and-delivery

    Amazon Web Services (AWS) MediaConvert can also be used.

    Best,
    Adam
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    • hi Adam,
      than you for you help but in the link that you send to download Media Encoder or Dolby Encoding Engine. See -
      https://customer.dolby.com/content-creation-and-delivery, it asks me for the company name and email I bought the professional cubase 12 software in the USA including dolby atmos I made the purchase as an independent professional musician your link does not accept me for not having company info . Please let me know how I can do it. I have my fulldome movie ready and they require AC3 audio in Chile. I stay tuned and thank you very much.

      CLAUDIO RECABARREN MADRID
      Astro Arte
      www.claudiorecabarren.com





      El mar, 21 feb 2023 a las 13:43, Dolby Professional Support Community (<
      salesforce-no-reply@dolby.com>) escribió:
      Expand Post
  • AdamP (Dolby Labs)

    Hi Claudio,

    You will first need to get 5.1 exported from Cubase 12 from your Atmos ADM master. You should be able to do this in Cubase. If not you could always download the trial version of the Dolby Atmos Production Suite from the above link if working on a Mac and export the 5.1 from that application.

    There is an intellectual property vetting that occurs when downloading the evaluation copy of Dolby Media Encoder. If you can't supply company information this could be a problem.

    But, there are other options for encoding 5.1 to Dolby Digital. Apple Compressor will work if you are on a Mac. There are even command line tools like ffmpeg that could work for a one time solution.

    Cloud encoding solutions like
    encoding.com or AWS MediaConvert are other options but require setting up an account.

    Best,
    Adam
    Expand Post