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  1. Member
    Join Date
    Jan 2020
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    netherlands
    Search Comp PM
    I want to compress a audio from bluray and i don't know the quality setting for 7.1 channels. what bitrate is the most used for this type of audio?
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  2. Dinosaur Supervisor KarMa's Avatar
    Join Date
    Jul 2015
    Location
    US
    Search Comp PM
    480kbit for AAC-LC is a good place to start.
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  3. For AAC you can use variable bitrate encoding and select a quality instead, so it works much like selecting a CRF value for x264 rather than a bitrate. What's your desired output format, because obviously the type of encoder used will make a difference. Without knowing that it's a bit like asking what bitrate to use to compress video without knowing the encoder type.

    If you are wanting AAC for the output, you might want to read this
    https://forum.videohelp.com/threads/377639-7-1ch-AAC-encoding#post2438694
    but the bottom line is for 7.1ch AAC encoding, you probably should use QAAC.
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