The ESP Guitar Company

Hey there! I've encountered similar issues before with mac.mkv files on Mac. It could be due to compatibility issues or codec problems. Sometimes, the default media player on Mac doesn't support certain codecs used in .mkv files. Have you tried using a different media player, like VLC or IINA? These players usually have broader codec support and might be able to play your .mkv files without any hassle. If that doesn't work, you might want to check if there are any updates available for your current media player or codecs. Updating them could potentially resolve the issue.