<s>
MKVToolNix	B-Language
is	O
a	O
collection	O
of	O
tools	O
for	O
the	O
Matroska	O
media	O
container	O
format	O
by	O
Moritz	O
Bunkus	O
including	O
mkvmerge	B-Language
.	O
</s>
<s>
The	O
free	B-License
and	I-License
open	I-License
source	I-License
Matroska	O
libraries	O
and	O
tools	O
are	O
available	O
for	O
various	O
platforms	O
including	O
Linux	B-Application
and	O
BSD	B-Operating_System
distributions	O
,	O
macOS	B-Application
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
The	O
tools	O
can	O
be	O
also	O
downloaded	O
from	O
video	O
software	O
distributors	O
and	O
FOSS	B-License
repositories	O
.	O
</s>
<s>
MKVToolNix	B-Language
was	O
reviewed	O
by	O
the	O
Linux	B-Application
Journal	O
,	O
Linux	B-Application
Format	O
,	O
the	O
ICTE	O
Journal	O
,	O
and	O
Softpedia	O
among	O
others	O
.	O
</s>
<s>
A	O
"	O
portable	O
"	O
Windows	O
edition	O
exists	O
,	O
but	O
is	O
not	O
available	O
in	O
the	O
PortableApps	B-Application
format	O
.	O
</s>
<s>
MKVToolNix	B-Language
GUI	B-Application
is	O
a	O
Qt	O
GUI	B-Application
for	O
mkvmerge	B-Language
and	O
a	O
successor	O
of	O
mmg	O
.	O
</s>
<s>
mkvmerge	B-Language
merges	O
multimedia	O
streams	O
into	O
a	O
Matroska	O
file	O
.	O
</s>
