If you want to increase the number of video files a user can upload to some number greater than 50, you have to edit the following file:
ray/modules/movie/xml/settings.xml
Look for
<item type="number" key="filesCount" default="10" range="3:50"><caption><![CDATA[Maximum uploading files number per user]]></caption></item>
In the "range" value, enter in a larger number than 50. In my case, I used 500...
<item type="number" key="filesCount" default="10" range="3:500"><caption><![CDATA[Maximum uploading files number per user]]></caption></item>
This worked beautifully for me. Please comment if you have another suggestion.