How to convert M4A (AAC/ALAC) to Ogg Vorbis
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Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
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Convert M4A (AAC/ALAC) to Ogg Vorbis
NexMedia converts M4A (AAC/ALAC) to Ogg Vorbis on its own servers. Processing time depends on the file size and how busy the queue is.
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Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About M4A (AAC/ALAC)
M4A is an MPEG-4 audio file: the MP4 container holding only audio, usually AAC and sometimes Apple Lossless (ALAC).
Music bought on iTunes, iPhone voice memos and many podcast downloads.
Whether an M4A is lossy or lossless depends on the codec inside, which the file extension does not show.
Convert M4A to Ogg Vorbis online free, no account required — Ogg Vorbis is an open, royalty-free lossy audio format.
Change M4A to Ogg Vorbis without losing quality — convert M4A to Ogg Vorbis free in your browser.
Why won't my car radio or old speaker play my M4A files? The MPEG-4 audio container is newer than MP3, and devices that only decode MP3 cannot read it until it is converted.
About Ogg Vorbis
Ogg Vorbis is the open, royalty-free Vorbis audio codec in the Ogg container, developed by the Xiph.Org Foundation.
Games, open-source software and music streaming; Spotify has streamed its music in Ogg Vorbis.
Apple devices have limited support for Ogg Vorbis, and many car stereos do not play it.
Why convert audio to OGG? For open-source projects and game engines: the format is patent-free and browsers and engines play it natively.
What changes when you convert M4A to Ogg Vorbis
- The audio is decoded and re-encoded as Ogg Vorbis at the default settings, so the result is close to the M4A but not bit-identical.
Settings you can change
Before you convert M4A to Ogg Vorbis, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted Ogg Vorbis file is kept for 2 hours, then deleted.
M4A to Ogg Vorbis: questions and answers
Does converting M4A to Ogg Vorbis reduce quality?
The audio is decoded and re-encoded as Ogg Vorbis at the default settings, so the result is close to the M4A but not bit-identical.
What is the difference between M4A and Ogg Vorbis?
M4A is an MPEG-4 audio file, usually holding AAC. Ogg Vorbis is an open, royalty-free lossy audio format.
Can I change the settings when converting M4A to Ogg Vorbis?
Before you convert M4A to Ogg Vorbis, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Do I need an account to convert M4A to Ogg Vorbis?
No. You can convert M4A to Ogg Vorbis without an account; signing in raises the file-size and daily limits.
How long is my converted Ogg Vorbis file kept?
The Ogg Vorbis file you convert from M4A is kept for 2 hours, then deleted automatically.
When I convert M4A to Ogg Vorbis, is the audio re-encoded?
The audio is decoded and re-encoded as Ogg Vorbis at the default settings, so the result is close to the M4A but not bit-identical.
Will converting M4A to Ogg Vorbis change my original file?
No. The conversion reads your M4A and writes a new Ogg Vorbis file, leaving your original M4A file untouched.