Problem:

1. https://commons.wikimedia.org/wiki/Special:MediaSearch?quickview=1&q=Battery+of+tests&type=video
2. Expand result for Cell-02-engineerguy.ogv

Another example with an image:
https://commons.wikimedia.org/wiki/File:Porto_Covo_January_2011-2b.jpg

Expected:

"June 2011"

Actual:

"1 June 2011"

(there is an unspecified date wrongly inferred)

The file information template takes numerous date formats as well as range and approximation templates (such as {{between}}). When possible, these are normalized to produces semantic HTML and machine-readable data that consuming tools should use as-is. In this case, <time class="dtstart" datetime="2011-06">June 2011</time> is produced.

I don't know for sure if that's semantically correct, but if it isn't, then we should help the community update the formatting to work with the standard, or if it is, to update MediaSearch to support the format produced in this case.

The way I noticed this is that the one of the files I edited originally used a non-semantic non-localisable form to specify the month. I changed it to use the machine-readable format to support localisation and such which worked for the file description page, but seems to have confused MediaSearch :)