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

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

artid   brtid   crtid   drtid   ertid   frtid   grtid   hrtid   irtid   jrtid   krtid   lrtid   mrtid   nrtid   ortid   prtid   qrtid   rrtid   srtid   trtid   urtid   vrtid   wrtid   xrtid   yrtid   zrtid   0rtid   1rtid   2rtid   3rtid   4rtid   5rtid   6rtid   7rtid   8rtid   9rtid