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Asked: 2026-06-14T19:35:23+00:00

I work on iOS app with recording feature. I have big problem with straight

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I work on iOS app with recording feature. I have big problem with straight AAC mpeg4-audio recording in .m4a file.

My working solution is recording in .caf and then converting this file in required .m4a format, but is it slow and not acceptable.

I found the Michael Tyson’s wrapper TPAACAudioConverter, which is maybe the right solution, but my problem is, that i don’t know how to correct initialize and use this wrapper for direct AAC recording in .m4a file (without the supplementary post-conversion after recording).

If anyone have the working example on Github or can me help with it, please let me know.

Many thanks.

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1 Answer

  1. Editorial Team

    TPAACAudioConverter’s not well suited for live recording, just because of the way it’s structured, pulling audio from a delegate instead of offering the ability to send audio to it directly.

    I recommend using the ExtAudioFile services directly, as it already does the work for you.

    If you really have to use TPAACAudioConverter, you’ll need to use a ring buffer (like TPCircularBuffer) to store audio until TPAACAudioConverter retrieves it via the delegate method. It’s messy though; use ExtAudioFile.

    For the record, The Amazing Audio Engine contains a very simple mechanism for recording straight to AAC, or any other supported format. It’ll be out soon.

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