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

11.ASX	Advanced Stream Redirector
11.DTS	Digital Theater Systems Audio File
11.GXF	General eXchange Format
11.M2V	MPEG-2 Video
11.M3U	MP3 Uniform Resource Locator
11.M4V	MPEG-4 Video File
11.MPEG1	MPEG-1 Video
11.MPEG2	MPEG-2 Video
11.MTS	AVCHD Video File
11.MXF	Material eXchange Format
11.OGM	Ogg Multimedia Container File
11.PLS	Playlist
11.BUP	DVD Information File
11.A52	Dolby Digital AC-3 Compressed Audio File
11.AAC	Advanced Audio Coding Compressed Audio File
11.B4S	Winamp 3+ Playlist
11.CUE	Cue Sheet
11.DIVX	DivX Movie
11.DV	Digital Video
11.FLV	Flash Video
11.M1V	MPEG-1 Video
11.M2TS	MPEG-2 Transport Stream Videos
11.MKV	Matroska Video Stream
11.MOV	Apple QuickTime Movie
11.MPEG4	MPEG-4 Video
11.OMA	OpenMG Audio File
11.SPX	Ogg Speex Audio File
11.TS	DVD Video
11.VLC	VLC Media Player Data
11.VOB	DVD Video Object
11.XSPF	XML Shareable Playlist Format
11.DAT	VCD Video
11.BIN	Binary DVD Video
11.IFO	DVD Information File
11.PART	Partially Downloaded File
11.3G2	3G Mobile Phone Video
11.AVI	Audio Video Interleave
11.MPEG	MPEG Video
11.MPG	MPEG Video
11.FLAC	Free Lossless Audio Codec Compressed Audio FIle
11.M4A	MPEG-4 Audio File
11.MP1	MPEG-1 Audio Layer I
11.OGG	Ogg Multimedia Container File
11.WAV	Waveform Audio
11.XM	Extended Module Audio File
11.3GP	3G Mobile Phone Video
11.SRT	DVD Subtitles File
11.WMV	Windows Media Video
11.AC3	Dolby Digital AC-3 Compressed Audio File
11.ASF	Advanced Systems Format Video
11.MOD	MOD Audio File
11.MP2	MPEG-1 Audio Layer II
11.MP3	MPEG-1 Audio Layer 3
11.MP4	MPEG-4 Part 14 Multimedia Container
11.WMA	Windows Media Audio File
11.MKA	Matroska Audio Stream
11.M4P	Protected AAC File

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