Hello everyone, I hope this is not a dumb question, but I seem to have a problem with Sonos not being able to read certain M4A metadata, namely Album and Title. I use a little external hardrive connected to a Fritzbox as a poor man's NAS. The NAS stores a copy of my digital files and is hooked up …

Aah, it looks like I can solve the problem by re-wrapping said files in ffmpeg. Just need to find the right batch process :slight_smile:

You can also try Utils > Optimize MP4 from the right-click context menu. Not sure if it solves the problem, though.

I found this thread: [image] AAC and M4A formats? Support My car radio supports AAC format audio files, but they must have the file extension "m4a" (apparently iTunes AAC format). When I view files having "aac" extension with mp3tag I see that they have some tags, but if …

Thank you Florian. I tried that but wasn't successful. FFMPEG it is.

[image] bertofprey: basically I am ripping audio from a streaming service as a speed up workaround to digitize my records Maybe you should elaborate on this part to help people identify the cause.

I used a software called Audfree, which rips audio from streaming services. I am using it to get digital copies of the records that don't have a download code. MP3Tag (and foobar and vlc) did read the "Title" and "Album" tags just fine but Sonos did not like this type. It was also possible to chan…

If you are interested in finding out the reason for the Sonos behaviour, you could share 1 x track where Sonos can't read the TITLE and ALBUM and 1 x track where Sonos reads this information as expected.

The example files you've provided are not erroneous per se. The only differences I've noticed are different Codec IDs (mp42/isom on the bad, and M4A /isom/iso2 on the good). If the software you're using also converts to MP3, you might circumvent the issue with Sonos.

Thank you Florian for looking into it. MP3 would be an option, but I understood that the format of the streaming provider is also mp4 based and I did not want to trigger another cross-conversion (though it is not transparent if the Audfree "ripping" process itself is generating a cross-conversion t…

[image] bertofprey: but I understood that the format of the streaming provider is also mp4 based and I did not want to trigger another cross-conversion (though it is not transparent if the Audfree "ripping" process itself is generating a cross-conversion too). Your software makes uncompressed…

M4A and Sonos (Sonos doesn't seem to recognize Album & Title)

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ohrenkino March 20, 2021, 6:17pm 4

I found this thread: