How to set a blank title with mkvmerge

[Ragnarok10]

I don't like when mkv files have an explicit title set since I'd rather they just "inherit" the title from the filename. I know I can delete titles using mkvpropedit, but since I'm already muxing multiple files with mkvmerge I'd rather just do it in a single step. Most of the time, the source mkv doesn't have a title, so it's fine. But when the source mkv does have a title that gets copied over to the output file, which I don't want.

First I tried this, putting the --title argument before the mkv file and sub file that I'm muxing:
mkvmerge -o "output.mkv" --title "" "input.mkv" "input.ass"

This results in only the subtitle file being muxed, with the mkv file being ignored, even though putting any non-empty title in the title's argument makes it include both as expected.

Then I tried moving the title to the end:
mkvmerge -o "output.mkv" "input.mkv" "input.ass" --title ""

This results in the following: "Error: '--title' lacks the title."
Again, putting in a non-empty title allows this to work.

My understanding was that global attributes like --title can be specified in any order anyway. Additionally, I looked at the command generated from muxing those two files in MKVToolNix, and it does seem to put --title "" after the individual files (though technically it's not last since it also specifies the --track-order after that).

I was on a year old version of mkvmerge, but I just updated to the most recent version and the issue still occurs.

Any help would be appreciated.

[Ennio]

--title "" works on my Windows 7 pc, wherever I put it. Maybe try a Qt5 build:

https://forum.videohelp.com/threads/405407-NON-OFFICIAL-Windows-builds-of-MKVtoolnix/p...e3#post2672418

[Ragnarok10]

I'm on Windows 10, so I'm pretty sure the official release is just fine. Seems like the version you linked to is for Windows 7 compatibility. Thanks anyway though.

[Ragnarok10]

I suppose I should add that I'm running mkvmerge from Powershell. I just tried copying the command to cmd and it works correctly with the --title "". Is there a known issue with running mkvmerge in Powershell or is it supposed to work there perfectly fine?

[Ragnarok10]

Apparently it was a bug in Powershell. Sending empty arguments just outright didn't work in Powershell until a recent feature (experimental in 7.2, enabled by default in 7.3). Unfortunately this update makes some other things I wanted to do harder, but at least the core functionality works now.

See: https://github.com/PowerShell/PowerShell/issues/6280

[El Heggunte]

I suppose I should add that I'm running mkvmerge from Powershell. I just tried copying the command to cmd and it works correctly with the --title "". Is there a known issue with running mkvmerge in Powershell or is it supposed to work there perfectly fine?

Thanks for making things clear. *THUMBS UP*
PowerShell is much more complicated than the olde and goode command-line interpreter of Windows
(cmd.exe, which was command.com in the non-NT versions).
Most people, including myself, have no idea of how to use PowerShell, and so we keep it solemnly ignored.