files with ë or é etc do not make it into playlist

[simoncn]

I tried this with some local files on the Mac and it produced a working .m3u8 playlist. However, this playlist can't be moved off the Mac without breaking it. This is because the Mac file system uses the NFD (decomposed) form of UTF-8, unlike all other platforms which use the NFC (composed) form of UTF-8.

When you produced the example.m3u8 file, were the filenames local Mac files or were they filenames on your Synology NAS viewed using SMB?

If they were filenames on your Synology NAS, were the files copied from macOS using SMB or created in some other way?