Embed film description text to mkv?

[King Mustard]

Is this possible?

[sneaker_ger]

You mean like a tag? Mkv has tags, incl. "SUMMARY".
https://matroska.org/technical/specs/tagging/index.html

[hubblec4]

Embed film description text, what is that?
Do you have an example?

[Liisachan]

If you create an xml file using a text editor (Notepad will suffice), that says
...
<Simple>
<Name>DESCRIPTION</Name>
<String>(whatever)</String>
</Simple>

<Simple>
<Name>COMMENT</Name>
<String>(whatever)</String>
</Simple>

and just specify it, on Mkvmerge GUI, when creating an mkv file, then a player like MPC shows (whatever) as "Description" below the video itself (Ctrl+3) while playing the resulted mkv file.
(Or if you mean subtitles, you can of course embed them as you like.)

[hubblec4]

If you create an xml file using a text editor (Notepad will suffice), that says
...
<Simple>
<Name>DESCRIPTION</Name>
<String>(whatever)</String>
</Simple>

<Simple>
<Name>COMMENT</Name>
<String>(whatever)</String>
</Simple>


Ok, simple Matroska Tags will be used.
For creating such Tags it is easier to use chapterEditor instead of a text editor.


.....then a player like MPC shows (whatever) as "Description" below the video itself (Ctrl+3) while playing the resulted mkv file.
...
Ok, I didn't know this before.