VLC media player is an open source video and audio player capable of playing almost any type of media including DVDs and VCDs. In addition to being able to play most video and audio files, VLC can also post free ads without registration
File extensions that can be opened by vlc-media-player

kc.ASX	Advanced Stream Redirector
kc.DTS	Digital Theater Systems Audio File
kc.GXF	General eXchange Format
kc.M2V	MPEG-2 Video
kc.M3U	MP3 Uniform Resource Locator
kc.M4V	MPEG-4 Video File
kc.MPEG1	MPEG-1 Video
kc.MPEG2	MPEG-2 Video
kc.MTS	AVCHD Video File
kc.MXF	Material eXchange Format
kc.OGM	Ogg Multimedia Container File
kc.PLS	Playlist
kc.BUP	DVD Information File
kc.A52	Dolby Digital AC-3 Compressed Audio File
kc.AAC	Advanced Audio Coding Compressed Audio File
kc.B4S	Winamp 3+ Playlist
kc.CUE	Cue Sheet
kc.DIVX	DivX Movie
kc.DV	Digital Video
kc.FLV	Flash Video
kc.M1V	MPEG-1 Video
kc.M2TS	MPEG-2 Transport Stream Videos
kc.MKV	Matroska Video Stream
kc.MOV	Apple QuickTime Movie
kc.MPEG4	MPEG-4 Video
kc.OMA	OpenMG Audio File
kc.SPX	Ogg Speex Audio File
kc.TS	DVD Video
kc.VLC	VLC Media Player Data
kc.VOB	DVD Video Object
kc.XSPF	XML Shareable Playlist Format
kc.DAT	VCD Video
kc.BIN	Binary DVD Video
kc.IFO	DVD Information File
kc.PART	Partially Downloaded File
kc.3G2	3G Mobile Phone Video
kc.AVI	Audio Video Interleave
kc.MPEG	MPEG Video
kc.MPG	MPEG Video
kc.FLAC	Free Lossless Audio Codec Compressed Audio FIle
kc.M4A	MPEG-4 Audio File
kc.MP1	MPEG-1 Audio Layer I
kc.OGG	Ogg Multimedia Container File
kc.WAV	Waveform Audio
kc.XM	Extended Module Audio File
kc.3GP	3G Mobile Phone Video
kc.SRT	DVD Subtitles File
kc.WMV	Windows Media Video
kc.AC3	Dolby Digital AC-3 Compressed Audio File
kc.ASF	Advanced Systems Format Video
kc.MOD	MOD Audio File
kc.MP2	MPEG-1 Audio Layer II
kc.MP3	MPEG-1 Audio Layer 3
kc.MP4	MPEG-4 Part 14 Multimedia Container
kc.WMA	Windows Media Audio File
kc.MKA	Matroska Audio Stream
kc.M4P	Protected AAC File

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