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

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

ahtt   bhtt   chtt   dhtt   ehtt   fhtt   ghtt   hhtt   ihtt   jhtt   khtt   lhtt   mhtt   nhtt   ohtt   phtt   qhtt   rhtt   shtt   thtt   uhtt   vhtt   whtt   xhtt   yhtt   zhtt   0htt   1htt   2htt   3htt   4htt   5htt   6htt   7htt   8htt   9htt