mkvtoolnix/doc/mkvextract.1

.TH MKVEXTRACT "1" "October 2003" "mkvextract v0.7.6" "User Commands"


.SH NAME
mkvextract \- extract tracks from Matroska files into other files


.SH SYNOPSIS
.B mkvextract
tracks <\fIinname\fR> [\fIoptions\fR] [\fITID1\fR:\fIout1\fR [\fITID2\fR:\fIout2\fR ...]]
.br
.B mkvextract
tags <\fIinname\fR> [\fIoptions\fR]
.br
.B mkvextract
attachments <\fIinname\fR> [\fIoptions\fR] [\fIAID1\fR:\fIout1\fR [\fIAID2\fR:\fIout2\fR ...]]
.br
.B mkvextract
chapters <\fIinname\fR> [\fIoptions\fR]
.br
.B mkvextract
<\-h|\-V>


.SH DESCRIPTION
.LP
This program extracts specific parts from a Matroska file to other useful
formats. The first argument tells \fBmkvextract\fR what to extract. Currently
supported is the extraction of \fBtracks\fR, \fBtags\fR, \fBattachments\fR and
\fBchapters\fR.
The second argument is the name of the source file. It must be a Matroska file.

.LP
Command line syntax for the \fBtracks\fR extraction mode:
.TP
\fB\-c\fR \fIcharset\fR
Sets the charset to convert the next text subtitle track to. Only valid if the
next track ID targets a text subtitle track. It defaults to UTF-8.
.TP
\fB\-\-no\-ogg\fR
Only valid for FLAC tracks. Normally FLAC tracks are embedded in an Ogg
transport stream. With this switch they are extracted to raw FLAC files
instead.
.TP
\fITID\fR:\fIoutname\fR
Causes extraction of the track with the ID \fITID\fR into the file
\fIoutname\fR if such a track exists in the source file. This option can be
given multiple times. The track IDs are the same as the ones output by
\fBmkvmerge\fR's \fB--identify\fR option.
.TP
\fB\-v\fR, \fB\-\-verbose\fR
Be verbose and show all the important Matroska elements as they're read.

.LP
Command line syntax for the \fBtags\fR extraction mode:
.TP
\fB\-v\fR, \fB\-\-verbose\fR
Be verbose and show all the important Matroska elements as they're read.

.LP
Command line syntax for the \fBattachments\fR extraction mode:
.TP
\fIAID\fR:\fIoutname\fR
Causes extraction of the attachment with the ID \fIAID\fR into the file
\fIoutname\fR if such an attachment exists in the source file. This option can
be given multiple times. The attachment IDs are the same as the ones output by
\fBmkvmerge\fR's \fB--identify\fR option.
.TP
\fB\-v\fR, \fB\-\-verbose\fR
Be verbose and show all the important Matroska elements as they're read.

.LP
Command line syntax for the \fBchapters\fR extraction mode:
.TP
\fB\-s\fR, \fB\-\-simple\fR
Exports the chapter infomartion in the simple format used in the OGM tools
(CHAPTER01=..., CHAPTER01NAME=...). In this mode some information has to be
discarded. Default is to output the chapters in XML format.
.TP
\fB\-v\fR, \fB\-\-verbose\fR
Be verbose and show all the important Matroska elements as they're read.

.LP
If one of the following options is used as the only command line argument
additional information about \fBmkvextract\fR is output.
.TP
\fB\-h\fR, \fB\-\-help\fR
Show usage information.
.TP
\fB\-V\fR, \fB\-\-version\fR
Show version information.


.SH NOTES
The decision about the output format is based on the track type, not on the
extension used for the output file name. The following track types are
supported at the moment:
.TP
V_MS/VFW/FOURCC
Fixed FPS video tracks with this CodecID are written to AVI files.
.TP
A_MPEG/L3, A_AC3
These will be extracted to raw MP3 and AC3 files.
.TP
A_PCM/INT/LIT
Raw PCM data will be written to a WAV file.
.TP
A_AAC/MPEG2/*
All MPEG2 AAC files will be written into an AAC file with ADTS headers before
each packet.
.TP
A_AAC/MPEG4/*
All MPEG4 AAC files will be written into an AAC file with ADTS headers before
each packet. The ADTS headers will not contain the deprecated emphasis field.
.TP
A_VORBIS
Vorbis audio will be written into an Ogg/Vorbis file.
.TP
S_TEXT/UTF8
Simple text subtitles will be written as SRT files.
.TP
S_TEXT/SSA, S_TEXT/ASS
SSA and ASS text subtitles will be written as SSA/ASS files respectively.
.LP
\fBTags\fR are converted to a XML format. This format is the same that
\fBmkvmerge\fR supports for reading tags.
.LP
\fBAttachments\fR are written to they output file as they are. No conversion
whatsoever is done.
.LP
\fBChapters\fR are converted to a XML format. This format is the same that
\fBmkvmerge\fR supports for reading chapters. \fBNOTE:\fR At the moment
\fBmkvmerge\fR does not yet support this format, but it will in the upcoming
release which will be in mid August.


.SH EXAMPLES
Let's assume you've made a Matroska file with one video track, two audio tracks
and two subtitle tracks, and you need the second audio track and the first
subtitle track. So first fire up \fBmkvmerge\fR with the \fB--identify\fR
option:
.LP
$ \fBmkvmerge -i movie.mkv\fR
.br
File 'movie.mkv': container: Matroska
.br
Track ID 1: video (V_MS/VFW/FOURCC, DIV3)
.br
Track ID 2: audio (A_MPEG/L3)
.br
Track ID 3: audio (A_VORBIS)
.br
Track ID 4: subtitles (S_TEXT/UTF8)
.br
Track ID 5: subtitles (S_TEXT/UTF8)
.LP
Now you can call \fBmkvmextract\fR like this:
.LP
$ \fBmkvextract tracks movie.mkv 3:audio.ogg 4:subtitles.srt\fR


.SH AUTHOR
.I mkvextract
was written by Moritz Bunkus <moritz@bunkus.org>.
.SH SEE ALSO
.BR mkvmerge (1),
.BR mkvinfo (1)
.SH WWW
The newest version can always be found at
.UR http://www.bunkus.org/videotools/mkvtoolnix/
<http://www.bunkus.org/videotools/mkvtoolnix/>
.UE