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

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

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