XBMC4Xbox uses two different multimedia video player 'cores' for video-playback. The first core, dubbed "DVDPlayer", is XBMC's in-house developed video-playback core with support for DVD-Video movies and is based on libmpeg2 and libmad for MPEG decoding yet FFmpeg for media-container demuxing, splitting, as well as decoding other audio formats. Respective audio decoding is handled by liba52 for ac3 audio decoding and libdts / libdca for DTS audio. Also included is support for DVD-menus through libdvdnav and dvdread.[19] One relatively unusual feature of this DVD-player core is the capability to on-the-fly pause and play DVD-Video movies that are stored in ISO and IMG DVD-images or DVD-Video (IFO/VOB/BUP) images (even directly from uncompressed RAR and ZIP archives), from either local harddrive storage or network-share storage.