About the MP3 Encoder Pane

This section contains detailed information about the various settings within the MP3 Encoder pane of the Inspector window. You make your MP3 settings by either modifying an existing setting or creating a new setting in the Settings tab.

Figure. MP3 Encoder pane of the Inspector window.

The MP3 Encoder pane contains the following settings.

  • Extension: This field displays the MP3 file extension (.mp3) automatically after the MP3 output format is chosen from the File Format pop-up menu or the (+) pop-up menu in the Settings tab.
  • Allow Job Segmenting: This checkbox allows you to turn off job segmenting. It is relevant only if you are using Compressor with distributed processing and with multi-pass encoding. For more information, see Job Segmenting and Two-Pass or Multi-Pass Encoding.
  • Use Variable Bit Rate Encoding (VBR): This setting varies the number of bits used to store the music depending on the complexity of the music. This can help keep file size to a minimum.
  • Joint Stereo: When this checkbox is deselected, your MP3 files contain one track for the right stereo channel and one track for the left. In many cases, the two channels contain related information. When the Joint Stereo checkbox is selected, one channel carries the information that’s identical on both channels, and the other channel carries the unique information. At bit rates of 160 Kbps and below, this can improve the sound quality of your converted audio.
  • Smart Encoding Adjustments: Select this to have Compressor analyze your encoding settings and music source, and then adjust settings to maximize quality.
  • Filter Frequencies Below 10 Hz: Filtering inaudible frequencies results in smaller, more efficient files without perceptible loss of quality.