MKVMerge: how to get chapter titles from file names

[wallywalters]

I know how to use MKVMerge to join two audio tracks into a single MKA file -- with chapters -- using a command line like this:

mkvmerge -o OUTPUT.mka --generate-chapters when-appending INPUT1.opus + INPUT2.opus

I would like the chapters titles to be the same as the original input-file names -- in this case "INPUT1" and "INPUT2" -- but the chapters in my MKA output file are untitled. Is there any way to have MKVMerge get the chapter names from the file names (i.e., without having to use a separate CUE sheet or anything)? Thanks.

[Baldrick]

It looks you need a separate file with such info.

See https://mkvtoolnix.download/doc/mkvmerge.html#mkvmerge.chapters

[wallywalters]

I ws afraid of that. Then if MKVMerge can't do it, what's a good tool for generating such a document from a list of files (with the correct timings) from the command line?