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Useful built-in macOS command-line utilities

(weiyen.net)
837 points yen223 | 1 comments | 06 Nov 24 05:51 UTC | HN request time: 0s | source
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daneel_w ◴[06 Nov 24 16:42 UTC] No.42064988[source]▶
A couple more:

    afconvert(1) - an audio file format converter, which includes Apple's superior AAC codec from the Core Audio framework

    diskutil(8) - tons of tools for fixed and removable storage
Examples:

    afconvert in.wav -o out.m4a -q 127 -s 2 -b 160000 -f m4af -d 'aac '

    mb=300; diskutil eraseVolume APFS myramdisk `hdiutil attach -nomount ram://$((mb*2048))`
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hk1337 ◴[06 Nov 24 18:03 UTC] No.42066466[source]▶
How does that compare with ffmpeg? The arguments seem about the same.
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krackers ◴[06 Nov 24 18:45 UTC] No.42067194[source]▶
afcovert uses the superior inbuilt AAC converter. FFmpeg can do this as well with the right arguments but you have to dig them up and the quality is capped to a lower value than you can get with afconvert.
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anthk ◴[06 Nov 24 20:37 UTC] No.42068952[source]▶
There's no reason to use AAC when we have both OPUS and FLAC.
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1. ok_computer ◴[07 Nov 24 20:41 UTC] No.42080737[source]▶
I like to load WAVs on my iphone if lossless uncompressed available. AAC is the next highest quality supported lossy compression file in apple music app. From my understanding they won’t ever go to flac or opus because don’t want software decompression.

I like opus on VLC for youtube-dl rips but if I’m buying music I want lossless uncompressed.