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

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

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