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App for downsizing MP3s automatically when copying to a phone?
(sh.itjust.works)
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this post was submitted on 04 Aug 2025
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For lower bitrates, I'd suggest using a different codec than MP3. Opus is really solid, and at 128 kbps it will probably get you quality similar to MP3 at 192 kbps. Or you could go lower, and 96 kbps with Opus will be similar to MP3 at 128 kbps. I don't know an app that will do it automatically, but the CLI tools are really simple to use: you point them at the FLAC and tell it the target bitrate and that's it.
Alternatively, if you have access to a macOS machine, their AAC encoder is really good and likely superior to any MP3 encoder at equivalent bitrates.
This, @Thorned_Rose@sh.itjust.works.
I'm an audio engineer and can confirm that if you want the best quality audio for the file size, you want Opus. Opus at 128kbps is considered transparent, so it's roughly as good as 320kbps MP3s, but y'know, less than half the size.
Any thoughts on AAC compared to mp3 and Opus?
AAC is generally better than mp3, but idk about Opus.