Hello, I have got some m4a files from the same source. Some are editable, some are not. I think the error message is way too generic. Something like "Cannot write tags to file "Foo.m4a" in folder "bar"". I think it doesn't help to resolve the issue and as a trial is not so promising. If you have…

I, those were already provided in the suggestions list while writing the new topic. No solution was found. My point is that maybe a log can help. A generic message is not helping at all.

[image] robertotru: My point is that maybe a log can help So this is a feature request for a log and you do not need any further assistance to overcome the acute problem?

Can you maybe provide one file as an example? I can then try to analyze it and see if I can improve the error message in those cases. There is no log for that at the moment. However, most of the time it's a stream written by a faulty encoder, where even a error message would be of much help because…

@Florian sure I can. But I can't upload one, there is a restriction on the maximum upload file size. So I had to created a dropbox link Dropbox - mp3tag - Simplify your life

[image] Florian: most of the time it's a stream written by a faulty encoder Foobar says about the file with the name "notWorking.m4a": Unable to open item for playback (Unsupported format or corrupted file (invalid or incomplete data)). So that file does not even play.

@ohrenkino oh curious, I can play it (e.g. with vlc). I can also use an online converter to change it to mp3 or aac

Thanks for the example file. One indication that something might be a little bit off with that file is, that there are no information fields displayed (e.g., length or bitrate). I've had a look at the file and it's a WebM file (not an M4A file). The fact that it's working with a different program/s…

Ok. Got it. As I mentioned before, they are both generated using the same tool, not sure why they ended up having different content. But you are right, Apache Tika reports one as a video/webm file (the one not working) and the other as video/mp4. Thanks for supporting. Not sure which language you …

Which tool were you using for that? Producing WebM with a M4A file extension is clearly an issue worth noting. I'm using C++ for Mp3tag, so no Apache Tika for me. I'm also a little hesitant to implement workarounds for bugs in other software (except for Windows Explorer and iTunes — those are beyon…

Cannot write tags on m4a files from the same source

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ohrenkino July 29, 2021, 7:34am 2

What has happend on the way between the source and your target?
There are a number of threads that deal with write problems to m4a files.
Perhaps you find indicators that help you to overcome your problem. Just as examples: