No codec found when using apple-music-downloader

[m-elang-e]

Description

Hi, I'm encountering a persistent error when trying to download any album/song. The script fails with ⚠ Failed to extract info from manifest: no codec found.

Environment

• OS: macOS (Apple Silicon M-series)
• Execution method: Native execution (go run main.go) with the wrapper running in Docker.

Logs & Context

The network connection between the downloader and the wrapper is working fine. However, the wrapper logs show the following warning from Apple when the download is triggered:
[.] dialogHandler: {title: More than one device is trying to play music., message: With a Family plan, up to 5 other people can stream their music at once.}

Even with a completely fresh media-user-token and no other music playing on my devices, Apple seems to block the stream session, leading to an empty manifest or missing codecs in the downloader.

Is there an update planned for the wrapper or the manifest parser to bypass this new restriction? Thanks for your work!

[1727disc]

Do you think it could be a conflict between apple-music-downloader and wrapper? That's what it looks like to me, the downloader works first and then wrapper instance thinks downloader is still working which results in the message. I can't test this for myself since I'm on a family plan.

[m-elang-e]

Thanks for your reply! However, I don't think it's a conflict or a multi-device session issue for two reasons:

1. The family plan multi-device error message in the wrapper logs only appeared once by chance during dozens of tests. 99% of the time, the wrapper logs show absolutely nothing (or no errors), and the downloader outputs ⚠ Failed to extract info from manifest: no codec found.
2. My media-user-token is valid and stable (it hasn't changed between yesterday and today, and it works to stream music on my web browser).

It really looks like Apple modified their manifest format or their CDN response very recently, causing the downloader to receive an empty or unrecognizable .m3u8 stream, which results in the no codec found error.

Since you are on a Family plan, if you try to run the latest version right now, does it still successfully extract the codecs for you?

[1727disc]

Yes, I tried it and it returned without error. I should also mention I'm on the US storedfront. I tried on both Intel x64 Mac and ARM64 Raspberry Pi with wrapper and apple-music-downloader.