Disable PNS feature in ffmpeg conversion

[tobeehh]

Hey,

i am trying to go back to 2007 by using my old iPod. Now i realized that the PNS feature of ffmpeg that freyr uses causes a constant squeaking on the ipod. Any chance to implement something to convert without this issue?

For more info see https://www.reddit.com/r/ipod/comments/r2cti3/squeaking_noises_only_through_the_ipod_and_only/

Net info:
Your encoder is using the PNS feature in AAC. This is incompatible with iPods. Use -aac_pns 0 in ffmpeg to encode a file without this feature. I went down a deep rabbit hole, and talked to several ffmpeg developers to discover this.

[miraclx]

Interesting, have you already explored this fix? Does it work for you?

You can add the argument here:

freyr-js/cli.js

Line 1103 in a52cfbc

await ffmpeg.run(

Once you confirm it works for you, I'll accept a patch.

[tobeehh]

I will try that on the weekend and report back.

[tobeehh]

Works!

[tobeehh]

Can you release a docker variant of the new version as well again?

[miraclx]

Hi @tobeehh, I just created #409, you can use the docker image built to test – freyrcli/freyrjs-git:pr-409.

Once you confirm it works, I'll have it merged, and it'll ship in the next release.

[tobeehh]

Works like a charm! Great for all retro audio lovers! :)

[tthayer]

I had installed RockBox to work around this issue. Thanks for the fix!