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  1. On Windows, there's: ffmpeg/mencoder (vo-aacenc/faac*/fffmpegs own aac**), NeroAacEnc***, qaac****, FhgAacEnc*****
    On Linux, there's: ffmpeg/mencoder (vo-aacenc/faac*/fffmpegs own aac**), NeroAacEnc***

    But what's available on mac?

    I know that ffmpeg/mencoder (vo-aacenc/faac*/fffmpegs own aac**) are available, but are there others?

    I stumbled over xld which seems to support (like qaac) aac encoding through quicktime, but it seems like it does not support input via stdin.

    => Does anyone know some additional command line encoders that:
    a. support input via stdin
    b. runs on mac


    Cu Selur

    Ps.: afconvert looks promising, anyone know a link to some good documentation for afconvert preferable with some examples regarding encoding piped input (via stdin) to he-aac?

    -----------------
    * afaik license forbids to distribute it, when statically linked (aac lc only)
    ** alpha state, bad quality compared to the rest (aac lc only)
    *** license forbids redistribution
    **** requires 'Apple Application Support' (comes with itunes&co but is also available separately)
    ***** requires FHGs encoder libraries that come with WinAmp
    Last edited by Selur; 20th May 2012 at 09:26.
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  2. Member
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    try sox
    http://sox.sourceforge.net/

    can do most things with audio

    on 10.6 and later the command line tool pcastaction is a CLI for podcast/quicktime stuff
    pcastaction help encode gives this

    pcastaction help encode > ~/desktop/pcastaction_encode
    Podcast Producer action task, version 2.0
    Copyright 2007 Apple, Inc.

    encode: transforms the input file to the output file with the specified encoder

    usage: encode --prb=PRB --input=INPUT --output=OUTPUT --encoder=ENCODER

    the available encoders are:
    3gpp2_ezmovie
    3gpp2_release_A
    3gpp2_release_A_hint
    3gpp2_release_A_hint_server
    3gpp_mobile_mp4
    3gpp_mobile_mp4_hint
    3gpp_mobile_mp4_hint_server
    3gpp_release_5
    3gpp_release_5_hint
    3gpp_release_5_hint_server
    amc_ezmovie
    appletv
    avi
    avi_1cd
    avi_2cd
    desktop
    h264
    h264_hint
    h264_hint_server
    iphone
    iphone_cellular
    ipod
    ipod_audio
    mp4_audio_high
    mp4_audio_low
    mp4_high
    mp4_lan
    mp4_low
    mp4_low_stream
    mp4_medium
    mp4_medium_stream


    i'm guessing one of the ipod ones is aac!
    hope this helps
    jamie
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  3. Hmm,.. the sox I have doesn't have these an ipod_audio encoder,.. but I'll look into the pcastaction thing,..
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  4. I'm a MEGA Super Moderator Baldrick's Avatar
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    Sox
    Sound eXchange


    edit: Just testing...added it to our tools list.
    Last edited by Baldrick; 23rd May 2012 at 16:59.
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  5. ..... okay
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    hmm sox doesn't seem to do too well with m4a (which would be the aac option I think) try it on yours Selur with an output as something.m4a

    another alternative is qt_tools
    which gets you command line access to quicktime
    from here
    http://omino.com/sw/qt_tools/

    once installed you get qt_export as a command line tool

    qt_export /Users/jamie/torvalds.wav --video=0 --audio=mp4a,44100,16,2 --datarate=256 ~/desktop/torvalds.m4a

    the above command takes a wav and makes a 44.1kHz 16bit 2 channel aac file and outputs it on the dektop
    cheers
    j
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  7. Thanks! looks promising, but can it handle input from stdin?Will check tomorrow,.. (have to go to bed now,.. )
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