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

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

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