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

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

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