Recommended File Formats & Encoding

Article sections

    Audio Encoding

    Note: Libsyn recommends using MP3. We do not recommend using AAC (M4A) files as they will not play on Blackberry devices and many other portable media players.
    Spoken Word Shows:
    Stereo Bit Rate – 192 kbps (In Mono this gets cut in half)
    Sample Rate – 44.1 kHz
    Channels – Mono

    Music Shows:
    Stereo Bit Rate – 128 kbps
    Sample Rate – 44.1 kHz
    Channels – Stereo
    Stereo Mode – Joint Stereo

    Your editing software may offer a checkbox for VBR or Variable Bit Rate. Do not check this box, your bit rate needs to be constant. The reason behind this is variable bit rate will change how different players and systems scan the file, and they often will either be incompatible with VBR completely, or at the very least will get the duration of the file incorrect causing the file to end up cut off towards the end.

    Encoding Using Apple Podcasts

    If you want a quick and dirty way to get your WAV file out to an MP3, you can do so from inside Apple Podcasts. To start, access your Apple Podcasts preferences:

    Apple Podcasts Preferences

    On the General tab, hit Import Settings:

    General Preferences

    Hit the drop down for Settings and select Custom.

    Custom Settings

    An additional screen will open, enter the encoding settings shown in the image (based on the recommendations above):

    Encoding Settings in Apple Podcasts

    Hit OK on the dialog boxes to save your changes. Next, import your WAV file into your Apple Podcasts music Library and then locate it in your library (a simple drag and drop usually will work for pulling a media file into the music library). With that file selected, go under File –> Convert –> Create MP3 Version:

    Convert to MP3

    Apple Podcasts will convert the file and you will see both the MP3 and the WAV file in your library. To confirm, you can right click on the file and go to Get Info which will show you the file type and the encoding of that file. You can proceed to publish the MP3 as you wish.

    Get Info

    Have additional questions? Reach out to our friendly support team at



    in Podcast ProducersPublishing & Managing Content
    Close Menu