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

f4b.ASX	Advanced Stream Redirector
f4b.DTS	Digital Theater Systems Audio File
f4b.GXF	General eXchange Format
f4b.M2V	MPEG-2 Video
f4b.M3U	MP3 Uniform Resource Locator
f4b.M4V	MPEG-4 Video File
f4b.MPEG1	MPEG-1 Video
f4b.MPEG2	MPEG-2 Video
f4b.MTS	AVCHD Video File
f4b.MXF	Material eXchange Format
f4b.OGM	Ogg Multimedia Container File
f4b.PLS	Playlist
f4b.BUP	DVD Information File
f4b.A52	Dolby Digital AC-3 Compressed Audio File
f4b.AAC	Advanced Audio Coding Compressed Audio File
f4b.B4S	Winamp 3+ Playlist
f4b.CUE	Cue Sheet
f4b.DIVX	DivX Movie
f4b.DV	Digital Video
f4b.FLV	Flash Video
f4b.M1V	MPEG-1 Video
f4b.M2TS	MPEG-2 Transport Stream Videos
f4b.MKV	Matroska Video Stream
f4b.MOV	Apple QuickTime Movie
f4b.MPEG4	MPEG-4 Video
f4b.OMA	OpenMG Audio File
f4b.SPX	Ogg Speex Audio File
f4b.TS	DVD Video
f4b.VLC	VLC Media Player Data
f4b.VOB	DVD Video Object
f4b.XSPF	XML Shareable Playlist Format
f4b.DAT	VCD Video
f4b.BIN	Binary DVD Video
f4b.IFO	DVD Information File
f4b.PART	Partially Downloaded File
f4b.3G2	3G Mobile Phone Video
f4b.AVI	Audio Video Interleave
f4b.MPEG	MPEG Video
f4b.MPG	MPEG Video
f4b.FLAC	Free Lossless Audio Codec Compressed Audio FIle
f4b.M4A	MPEG-4 Audio File
f4b.MP1	MPEG-1 Audio Layer I
f4b.OGG	Ogg Multimedia Container File
f4b.WAV	Waveform Audio
f4b.XM	Extended Module Audio File
f4b.3GP	3G Mobile Phone Video
f4b.SRT	DVD Subtitles File
f4b.WMV	Windows Media Video
f4b.AC3	Dolby Digital AC-3 Compressed Audio File
f4b.ASF	Advanced Systems Format Video
f4b.MOD	MOD Audio File
f4b.MP2	MPEG-1 Audio Layer II
f4b.MP3	MPEG-1 Audio Layer 3
f4b.MP4	MPEG-4 Part 14 Multimedia Container
f4b.WMA	Windows Media Audio File
f4b.MKA	Matroska Audio Stream
f4b.M4P	Protected AAC File

af4b   bf4b   cf4b   df4b   ef4b   ff4b   gf4b   hf4b   if4b   jf4b   kf4b   lf4b   mf4b   nf4b   of4b   pf4b   qf4b   rf4b   sf4b   tf4b   uf4b   vf4b   wf4b   xf4b   yf4b   zf4b   0f4b   1f4b   2f4b   3f4b   4f4b   5f4b   6f4b   7f4b   8f4b   9f4b