Interestingly, when I exported to a single file then came down to the relevant bit, there is nothing about aspect ratio at all. I wonder where it is stored.
Code:
<movie>
<title>garage access door</title>
<sorttitle>agarage access door</sorttitle>
<userrating>0</userrating>
<top250>0</top250>
<outline></outline>
<plot>north-west cam</plot>
<tagline></tagline>
<runtime>0</runtime>
<mpaa></mpaa>
<playcount>22</playcount>
<lastplayed>2021-10-02</lastplayed>
<file></file>
<path>nfs://10.2.9.112/srv/nfs/movies/</path>
<filenameandpath>nfs://10.2.9.112/srv/nfs/movies/garage_access_door.strm</filenameandpath>
<basepath>nfs://10.2.9.112/srv/nfs/movies/garage_access_door.strm</basepath>
<id></id>
<status></status>
<code></code>
<aired></aired>
<trailer></trailer>
<resume>
<position>0.000000</position>
<total>0.000000</total>
</resume>
<dateadded>2021-09-25 14:57:52</dateadded>
<art>
<fanart>nfs://10.2.9.112/srv/nfs/movies/g.jpg</fanart>
<poster>nfs://10.2.9.112/srv/nfs/movies/g.jpg</poster>
<thumb></thumb>
</art>
</movie>
So I removed that entry from the library and tried your idea. Which did launch in 16:9 so I think problem solved, thank you!
Code:
% cat garage_access_door.nfo
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<movie>
<title>garage access door</title>
<sorttitle>agarage access door</sorttitle>
<plot>north-west cam on garage access door</plot>
<aspect>16:9</aspect>
<art>
<poster>nfs://10.2.9.112/srv/nfs/movies/g.jpg</poster>
<fanart>nfs://10.2.9.112/srv/nfs/movies/g.jpg</fanart>
</art>
</movie>