I'd like to play a video with vlc using the 'open with' option

You can create a Shortcut to easily pass the URL from your Clipboard to VLC open it, with just one click, or using one Shortcut Key

1. Create one shortcut to PowerShell.exe:

C:WindowsSystem32WindowsPowerShellv1.0powershell.exe

2. Add the following command to PowerShell Shortcut:

 -nop -c "$url=Get-ClipBoard; $vlc=start-Process -FilePath "vlc" -ArgumentList $url,-f,vlc://quit"

3. Copy URL (by Crtl+C) and then the Click on your shortcut or use ShortCut Key if set:

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Obs.: 1 If needed, adjust the command for keep VLC open after playing the URL,
just remove auto quit argument: ,vlc://quit

C:WindowsSystem32WindowsPowerShellv1.0powershell.exe -nop -c "$url=Get-ClipBoard; $vlc=start-Process -FilePath "vlc" -ArgumentList $url,-f"

Obs.: 2 Set your Shortcut key to Run, and set to Start* in Minimized windows.

The path of the file dropped on a batch file is returned as a normal %1 argument.

Example :

program.exe "%~1"

Use %* when dropping multiple files:

for %%a in (%*) do echo received [%%a]