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

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

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