Saving meta data?

[neosettler]

Greetings,

Using libvlc 3.0.7.1 on windows x64, I'm trying to open a local video mkv/mp4/mov and add meta such as an url. So far, I'm getting:

[000002574118ffb0] main meta writer debug: looking for meta writer module matching "any": 1 candidates
[000002574118ffb0] taglib meta writer error: File myfile.mov can't be opened for tag writing
[000002574118ffb0] main meta writer debug: no meta writer modules matched

I cant find any working example so I'm wondering if anyone had successfully save metadata and would be able to guess what I might be missing?

[neosettler]

Should I open a bug report?