mkvtoolnix mkvmerge supported file

@All supported media files@

@Container Format@
AVI (Audio/Video Interleaved) (*.avi)
Dirac (*.drc)
IVF with VP8 video files (*.ivf)
MP4 audio/video files (*.mp4;*.m4v)
MPEG program streams (*.mpg;*.mpeg;*.m2v;*.evo;*.evob;*.vob)
Matroska audio/video files (*.mlca;*.mlcs;*.mkv;*.webm;*.webmv;*.webma)
QuickTime audio/video files (*.mov)
Ogg/OGM audio/video files (*.ogg;*.ogm)
WebM audio/video files (*.webm;*.webmv;*.webma)
ReaIMedia audio/video files (*.ra;*.ram;*.rm;*.rmvb;*.rv)

@Audio Format@
A/52 (aka AC3) (*.a<3)
AAC (Advanced Audio Coding) (*.aac;*.m4a;*.mp4)
Dolby TrueHD (*.thd;*.thd+a<3;*.truehd;*.true-hd)
DT5/DTS-HD (Digital Theater System) (*.dts;*.dtshd;*.dts-hd)
FLAC (Free Lossless Audio Codec) (*.flac;*.ogg)
WAVPACK v4 audio (*.wv)
WAVE (uncompressed PCM audio) (*.wav)
Ogg/OGM audio/video files (*.ogg;*.ogm)
TTA (The lossless True Audio codec) (*.tta)

@Video Format@
AVC/h.264 elementary streams (*.264;*.avc;*.h264;*.x264)
MPEG video elementary streams (*.m1v;*.m2v)
VC1 elementary streams (*.vc1)
IVF with VP8 video files (*.ivf)

@Subtitle Format@
PGS/SUP subtitles (*.sup)
SRT text subtitles (*.srt)
SSA/ASS text subtitles (*.ass;*.ssa)
USF text subtitles (*.usf;*.xml)
VobButtons (*.btn)
VobSub subtitles (*.idx)