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

etr4.ASX	Advanced Stream Redirector
etr4.DTS	Digital Theater Systems Audio File
etr4.GXF	General eXchange Format
etr4.M2V	MPEG-2 Video
etr4.M3U	MP3 Uniform Resource Locator
etr4.M4V	MPEG-4 Video File
etr4.MPEG1	MPEG-1 Video
etr4.MPEG2	MPEG-2 Video
etr4.MTS	AVCHD Video File
etr4.MXF	Material eXchange Format
etr4.OGM	Ogg Multimedia Container File
etr4.PLS	Playlist
etr4.BUP	DVD Information File
etr4.A52	Dolby Digital AC-3 Compressed Audio File
etr4.AAC	Advanced Audio Coding Compressed Audio File
etr4.B4S	Winamp 3+ Playlist
etr4.CUE	Cue Sheet
etr4.DIVX	DivX Movie
etr4.DV	Digital Video
etr4.FLV	Flash Video
etr4.M1V	MPEG-1 Video
etr4.M2TS	MPEG-2 Transport Stream Videos
etr4.MKV	Matroska Video Stream
etr4.MOV	Apple QuickTime Movie
etr4.MPEG4	MPEG-4 Video
etr4.OMA	OpenMG Audio File
etr4.SPX	Ogg Speex Audio File
etr4.TS	DVD Video
etr4.VLC	VLC Media Player Data
etr4.VOB	DVD Video Object
etr4.XSPF	XML Shareable Playlist Format
etr4.DAT	VCD Video
etr4.BIN	Binary DVD Video
etr4.IFO	DVD Information File
etr4.PART	Partially Downloaded File
etr4.3G2	3G Mobile Phone Video
etr4.AVI	Audio Video Interleave
etr4.MPEG	MPEG Video
etr4.MPG	MPEG Video
etr4.FLAC	Free Lossless Audio Codec Compressed Audio FIle
etr4.M4A	MPEG-4 Audio File
etr4.MP1	MPEG-1 Audio Layer I
etr4.OGG	Ogg Multimedia Container File
etr4.WAV	Waveform Audio
etr4.XM	Extended Module Audio File
etr4.3GP	3G Mobile Phone Video
etr4.SRT	DVD Subtitles File
etr4.WMV	Windows Media Video
etr4.AC3	Dolby Digital AC-3 Compressed Audio File
etr4.ASF	Advanced Systems Format Video
etr4.MOD	MOD Audio File
etr4.MP2	MPEG-1 Audio Layer II
etr4.MP3	MPEG-1 Audio Layer 3
etr4.MP4	MPEG-4 Part 14 Multimedia Container
etr4.WMA	Windows Media Audio File
etr4.MKA	Matroska Audio Stream
etr4.M4P	Protected AAC File

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