this post was submitted on 25 Jul 2023
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How can I convert my music? (sopuli.xyz)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
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I have a fairly large music collection, which is 9.9 GB in size. It's mainly made up of MP3 files, with some OGG Vorbis files and a handful of WAV and WMA files. I would like to convert the entire library to AAC (or a better format, if there is one) in order to reduce the size of my collection by a considerable amount.

My library is organised using this folder structure:

~/Music/{Artist}/{Album}/{Track}

Can anyone recommend a GUI tool or shellscript which would recursively convert the files, map across the metadata, and dump the files into a different folder with the same directory structure?

EDIT: I have used a script to convert everything to Opus. Problem solved, just working out the kinks now.

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[–] [email protected] 34 points 1 year ago* (last edited 1 year ago) (1 children)

Converting from one lossy codec another isn't generally recommended, plus you aren't likely to save that much disk space by converting to AAC.

10 GB is actually pretty small for a local music collection, quite honestly. If I were you, I would try to expand your storage capacity instead of wasting time, and potentially audio quality, by transcoding.

[–] [email protected] 2 points 1 year ago (3 children)

I have an iPhone. The storage I have is all I've got.

[–] [email protected] 7 points 1 year ago* (last edited 1 year ago) (1 children)

  1. Don't buy iPhone

  2. You need ffmpeg

  3. Read this for the exact command

  4. You can use the find command (in console) to list all mp3 files, these you can pipe into ffmpeg.

Just ask ChatGPT to write the shell script for you

[–] [email protected] 4 points 1 year ago

Already did that. Thanks though.

By the way, owning an iPhone is not my choice. I'm 17 and still living with my parents, and my dad is a huge Apple fanboy. Ideally, I'd have either a Pixel with DivestOS, an Xperia with SailfishOS, a PinePhone with PostMarketOS, or an old Nokia 3210; but for now I'm stuck with my second hand iPhone SE.

[–] [email protected] 6 points 1 year ago

You could consider running a plex server and using Plexamp to stream from that to your phone. It’s free as of a few days ago!

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (2 children)

If I were you, I would stick to streaming in that case.

However, if you're dead set on storing files locally and there's no other option but to transcode, then use 128kbps Opus instead of AAC. It's a lot more efficient (assuming that iPhones support it - I haven't checked).

A good converter program to use is fre:ac but don't ask me for an iOS only app because I'm not an Apple guy at all.

[–] [email protected] 3 points 1 year ago

Doesn’t support it directly, I can’t add opus files to the iTunes library, so I had to use VLC for them, but it’s not designed to be a music player for the iPhone and the music stops after playing a couple of songs with the screen off

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

The app I'm using on my iPhone (foobar2000) supports OGG Opus. ~However, decoding takes about a second, resulting in a noticeable gap between songs.~

EDIT: It seems that HydrogenAudio have fixed the Opus decoding in foobar2000 Mobile.