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

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

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