: Use a versatile media player like VLC Media Player or MPC-HC. These players handle .mkv files and DDP2.0 audio without needing extra codecs.
: The video compression codec used (widely compatible with most players). DDP2.0 : Dolby Digital Plus audio with 2 channels (Stereo). Halo.S01E04.PL.1080p.WEB-DL.H264.DDP2.0-K83.mkv
: Since this is marked "PL," you can usually right-click within your media player under the Audio or Subtitle tracks to toggle between the original English and the Polish version. : Use a versatile media player like VLC