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

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

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