Download of MKV2ATV 1.4.5 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac app is a product of Corecode.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The application lies within Audio & Video Tools, more precisely Editors & Converters.
From the developer:
MKV2ATV is an application that can convert video files in the MKV container format to MP4 video files that are playable on the 'Apple TV'. MKV2ATV can convert most common MKV files quickly and has a queue for converting hundreds of files at once. Because MKV2ATV doesn't re-encode the video track, conversion is fast and the resulting video has the exact same high video-quality as the source file. Most subtitles are supported (see F.A.Q.).
You may want to check out more software for Mac, such as Trapcode Sound Keys, ImTOO HD Video Converter or Tipard DVD Audio Ripper for Mac, which might be related to MKV2ATV.