One of the many understated features in Mac OS X 10.7 Lion is the ability to natively convert audio to m4a directly in OS X Lion’s Finder – without any additional downloads or add-ons. Yes, an MPEG audio encoder is built directly into Mac OS X 10.7, meaning you can convert audio directly on your desktop without using any other apps, and it’s really fast too.
How to Convert Audio to M4A with OS X Lion’s Built-In Encoder
OS X Lion’s audio encoder is confirmed to support AIFF, AIFC, Sd2f, CAFF and WAV files, but other formats are likely supported for m4a conversion as well. Here’s how to use it:
a. Locate the source audio file(s) that you want to convert
b. Right-click on the audio input file and choose “Encode Selected Audio Files”
c. Select the Encoder Quality you wish to use, the menu translates as follows:
- High-Quality is 128 kbps
- iTunes Plus is 256 kbps
- Apple Lossless is lossless
- Spoken Podcast is 64 kbps
d. Specify the Destination, otherwise it will default to the same location as the source file
e. Click on “Continue” to start the conversion
The audio encoder is very fast and within just a few seconds you will have an m4a file ready to import into iTunes or elsewhere. You can also batch process a group of audio files to convert them to m4a using this tool, just select a group of files instead of one.
The same encoder in OS X Lion also includes the ability to encode and convert video files directly in the Finder too, making this utility even more powerful. By selecting a movie file, you can also choose to strip the video and directly encode the audio track, which is another nice touch.
Source from osxdaily.com
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