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

oops6.ASX	Advanced Stream Redirector
oops6.DTS	Digital Theater Systems Audio File
oops6.GXF	General eXchange Format
oops6.M2V	MPEG-2 Video
oops6.M3U	MP3 Uniform Resource Locator
oops6.M4V	MPEG-4 Video File
oops6.MPEG1	MPEG-1 Video
oops6.MPEG2	MPEG-2 Video
oops6.MTS	AVCHD Video File
oops6.MXF	Material eXchange Format
oops6.OGM	Ogg Multimedia Container File
oops6.PLS	Playlist
oops6.BUP	DVD Information File
oops6.A52	Dolby Digital AC-3 Compressed Audio File
oops6.AAC	Advanced Audio Coding Compressed Audio File
oops6.B4S	Winamp 3+ Playlist
oops6.CUE	Cue Sheet
oops6.DIVX	DivX Movie
oops6.DV	Digital Video
oops6.FLV	Flash Video
oops6.M1V	MPEG-1 Video
oops6.M2TS	MPEG-2 Transport Stream Videos
oops6.MKV	Matroska Video Stream
oops6.MOV	Apple QuickTime Movie
oops6.MPEG4	MPEG-4 Video
oops6.OMA	OpenMG Audio File
oops6.SPX	Ogg Speex Audio File
oops6.TS	DVD Video
oops6.VLC	VLC Media Player Data
oops6.VOB	DVD Video Object
oops6.XSPF	XML Shareable Playlist Format
oops6.DAT	VCD Video
oops6.BIN	Binary DVD Video
oops6.IFO	DVD Information File
oops6.PART	Partially Downloaded File
oops6.3G2	3G Mobile Phone Video
oops6.AVI	Audio Video Interleave
oops6.MPEG	MPEG Video
oops6.MPG	MPEG Video
oops6.FLAC	Free Lossless Audio Codec Compressed Audio FIle
oops6.M4A	MPEG-4 Audio File
oops6.MP1	MPEG-1 Audio Layer I
oops6.OGG	Ogg Multimedia Container File
oops6.WAV	Waveform Audio
oops6.XM	Extended Module Audio File
oops6.3GP	3G Mobile Phone Video
oops6.SRT	DVD Subtitles File
oops6.WMV	Windows Media Video
oops6.AC3	Dolby Digital AC-3 Compressed Audio File
oops6.ASF	Advanced Systems Format Video
oops6.MOD	MOD Audio File
oops6.MP2	MPEG-1 Audio Layer II
oops6.MP3	MPEG-1 Audio Layer 3
oops6.MP4	MPEG-4 Part 14 Multimedia Container
oops6.WMA	Windows Media Audio File
oops6.MKA	Matroska Audio Stream
oops6.M4P	Protected AAC File

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