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  1. Member
    Join Date
    Mar 2014
    Location
    Brazil, Rio de Janeiro
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    I want a Lossless audio codec to show up in this window:



    Is it possible to make FLAC or something else show up there?
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  2. Member Cornucopia's Avatar
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    Oct 2001
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    Deep in the Heart of Texas
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    For it to show up there, you would need to have an ACM-based flac encoder installed. AFAIK, while there is a Directshow one, I don't see one for ACM. Someone would have to program that.

    Scott
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  3. Member Bernix's Avatar
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    Apr 2016
    Location
    Europe
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    Hello,
    sorry i have one question. Do you feed virtualdub also with lossless audio?

    Bernix
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  4. Marsia Mariner
    Guest
    As Cornucopia said, there is no [ viable ] ACM .dll for a lossless audio format — even though the AVI container does support variable-bitrate audio.
    And if there was, it should be for ALAC, MPEG4-ALS, even WMA Lossless. Flac has always been a mess and IMHO would not be worth the effort.

    https://hydrogenaud.io/index.php/topic,16048.0.html
    Last edited by Marsia Mariner; 20th Jan 2018 at 10:23. Reason: edit
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  5. "<No compression (PCM)>" is lossless.

    Are you using it for some kind of intermediate? IMHO PCM is good enough for that - even uncompressed audio is often small enough. As the others said there doesn't really seem to be a common lossless codec for AVI. It is possible to use FLAC with the "External Encoders" feature (preferably with non-avi output, e.g. mkv) but that is more complicated than just selecting a codec in the ACM codec selection.

    More info in VirtualDub help (F1) via Processing->Using external encoders and here.


    (All that said: there are FLAC ACM versions. I haven't tested them, though. VBR in AVI is not a problem per se, only variable frame length.)
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