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

v6.ASX	Advanced Stream Redirector
v6.DTS	Digital Theater Systems Audio File
v6.GXF	General eXchange Format
v6.M2V	MPEG-2 Video
v6.M3U	MP3 Uniform Resource Locator
v6.M4V	MPEG-4 Video File
v6.MPEG1	MPEG-1 Video
v6.MPEG2	MPEG-2 Video
v6.MTS	AVCHD Video File
v6.MXF	Material eXchange Format
v6.OGM	Ogg Multimedia Container File
v6.PLS	Playlist
v6.BUP	DVD Information File
v6.A52	Dolby Digital AC-3 Compressed Audio File
v6.AAC	Advanced Audio Coding Compressed Audio File
v6.B4S	Winamp 3+ Playlist
v6.CUE	Cue Sheet
v6.DIVX	DivX Movie
v6.DV	Digital Video
v6.FLV	Flash Video
v6.M1V	MPEG-1 Video
v6.M2TS	MPEG-2 Transport Stream Videos
v6.MKV	Matroska Video Stream
v6.MOV	Apple QuickTime Movie
v6.MPEG4	MPEG-4 Video
v6.OMA	OpenMG Audio File
v6.SPX	Ogg Speex Audio File
v6.TS	DVD Video
v6.VLC	VLC Media Player Data
v6.VOB	DVD Video Object
v6.XSPF	XML Shareable Playlist Format
v6.DAT	VCD Video
v6.BIN	Binary DVD Video
v6.IFO	DVD Information File
v6.PART	Partially Downloaded File
v6.3G2	3G Mobile Phone Video
v6.AVI	Audio Video Interleave
v6.MPEG	MPEG Video
v6.MPG	MPEG Video
v6.FLAC	Free Lossless Audio Codec Compressed Audio FIle
v6.M4A	MPEG-4 Audio File
v6.MP1	MPEG-1 Audio Layer I
v6.OGG	Ogg Multimedia Container File
v6.WAV	Waveform Audio
v6.XM	Extended Module Audio File
v6.3GP	3G Mobile Phone Video
v6.SRT	DVD Subtitles File
v6.WMV	Windows Media Video
v6.AC3	Dolby Digital AC-3 Compressed Audio File
v6.ASF	Advanced Systems Format Video
v6.MOD	MOD Audio File
v6.MP2	MPEG-1 Audio Layer II
v6.MP3	MPEG-1 Audio Layer 3
v6.MP4	MPEG-4 Part 14 Multimedia Container
v6.WMA	Windows Media Audio File
v6.MKA	Matroska Audio Stream
v6.M4P	Protected AAC File

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