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Questions - audiotoolbox

Which ALAC encoder should I use with ffmpeg ? (alac, alac_at)

I'm encoding audio files from AIFC to ALAC using ffmpeg, I noticed that ffmpeg provides two different encoders for this purpose, named alac and alac_at: $ ffmpeg -encoders ... A..... alac ...
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Julien Dargelos

ffmpeg

codec

audiotoolbox

m4a

Votes: 0

Answers: 0

AudioConverterRef with different number of channels

I have an audio format with 4 channels that I want to convert into 2 channels format. kAudioConverterChannelMap can only discard the extra inputs: When In > Out, the first Out inputs are routed to...
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Leo

ios

core-audio

audiotoolbox

Votes: 0

Answers: 1

Latest Answer

AFAIK Apple does not provide an API that reduces the channel count of an audio stream, apart from discarding extra channels. Why? I guess because how you do this is such a personal choice that if they...
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Rhythmic Fistman

AU host crashes in IOThread in macOS 11 and later

I've problem with an AU host (based on Audio Toolbox/Core Audio, not AVFoundation) when running on macOS 11 or later and Apple Silicon – it crashes after some operations in GUI. The weird is, it crash...
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tomas.kolar

objective-c

macos

core-audio

audiounit

audiotoolbox

Votes: 0

Answers: 0

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