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

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

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