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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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1. synthoidzeta ◴[08 Nov 24 07:10 UTC] No.42084868[source]▶
Isn't -c:a aac_at the same? And then designate bitrate?