Well, it definitely doesn't display content by keyword straight out of the box. So I made it do so!
If anyone else wants to do the same this is how I did it.
Add the following line in the vidLister snippet under //settings, this is what sets it up to accept an additional input via the snippet call. The value is assigned to a variable at the same time for later use.
$keywords = $modx->getOption('keywords', $scriptProperties, '');
then under //criteria replace the line
$c->andCondition(array('active' => 1));
with
$c->where(array('active' => 1));
$c->andCondition(array('keywords' => $keywords));
and thats all there is to it! From there simply add a single keyword to each video you want to appear on a given page in the plugins management console and call the snippet like this:
[[!getPage? &element=`VidLister` &keywords=`KEYWORD`]]
where KEYWORD would be the keywords you assigned to the videos you want to display.
jobs jobbed! I can now display a set of videos on a page from the list the plugin pulls in.
