But I need to make sure I don't advocate piracy. The user might be using legally obtained content, but I should include a disclaimer about legal use.
Also, note that re-indexing can take time for large files but is usually straightforward. Provide clear steps for both installation and the re-indexing process. index of mkv 3 idiots install
Also, mention alternative tools, like FFmpeg for re-indexing, but mkvtoolnix is more user-friendly. Maybe provide an example command with FFmpeg in case they prefer it. But I need to make sure I don't advocate piracy