mkvalidator: mkvalidator (Verify Matroska and WebM files) mkvalidator: mkvalidator: mkvalidator is a simple command line tool to verify Matroska and WebM mkvalidator: files for spec conformance. It checks the various bogus or missing mkvalidator: key elements against the EBML DocType version of the file and reports mkvalidator: the errors/warnings in the command line. mkvalidator: mkvalidator: Home page: https://www.matroska.org/downloads/mkvalidator.html mkvalidator: mkvalidator: mkvalidator: