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

yp4.ASX	Advanced Stream Redirector
yp4.DTS	Digital Theater Systems Audio File
yp4.GXF	General eXchange Format
yp4.M2V	MPEG-2 Video
yp4.M3U	MP3 Uniform Resource Locator
yp4.M4V	MPEG-4 Video File
yp4.MPEG1	MPEG-1 Video
yp4.MPEG2	MPEG-2 Video
yp4.MTS	AVCHD Video File
yp4.MXF	Material eXchange Format
yp4.OGM	Ogg Multimedia Container File
yp4.PLS	Playlist
yp4.BUP	DVD Information File
yp4.A52	Dolby Digital AC-3 Compressed Audio File
yp4.AAC	Advanced Audio Coding Compressed Audio File
yp4.B4S	Winamp 3+ Playlist
yp4.CUE	Cue Sheet
yp4.DIVX	DivX Movie
yp4.DV	Digital Video
yp4.FLV	Flash Video
yp4.M1V	MPEG-1 Video
yp4.M2TS	MPEG-2 Transport Stream Videos
yp4.MKV	Matroska Video Stream
yp4.MOV	Apple QuickTime Movie
yp4.MPEG4	MPEG-4 Video
yp4.OMA	OpenMG Audio File
yp4.SPX	Ogg Speex Audio File
yp4.TS	DVD Video
yp4.VLC	VLC Media Player Data
yp4.VOB	DVD Video Object
yp4.XSPF	XML Shareable Playlist Format
yp4.DAT	VCD Video
yp4.BIN	Binary DVD Video
yp4.IFO	DVD Information File
yp4.PART	Partially Downloaded File
yp4.3G2	3G Mobile Phone Video
yp4.AVI	Audio Video Interleave
yp4.MPEG	MPEG Video
yp4.MPG	MPEG Video
yp4.FLAC	Free Lossless Audio Codec Compressed Audio FIle
yp4.M4A	MPEG-4 Audio File
yp4.MP1	MPEG-1 Audio Layer I
yp4.OGG	Ogg Multimedia Container File
yp4.WAV	Waveform Audio
yp4.XM	Extended Module Audio File
yp4.3GP	3G Mobile Phone Video
yp4.SRT	DVD Subtitles File
yp4.WMV	Windows Media Video
yp4.AC3	Dolby Digital AC-3 Compressed Audio File
yp4.ASF	Advanced Systems Format Video
yp4.MOD	MOD Audio File
yp4.MP2	MPEG-1 Audio Layer II
yp4.MP3	MPEG-1 Audio Layer 3
yp4.MP4	MPEG-4 Part 14 Multimedia Container
yp4.WMA	Windows Media Audio File
yp4.MKA	Matroska Audio Stream
yp4.M4P	Protected AAC File

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