This is because the settings are not set up correctly in the Video Category itself.
 
  1. Navigate to onMessage > Content > Videos
  2. Click on the Gear Icon on the line with the Video Category to be edited
  3. Ensure these 2 Video Information checkboxes are selected: Allow titles on videos and Allow descriptions on videos
The only way the Video File name will display and not create a generic numbered video file name is to have these items selected.

Note: Keep in mind if you change these settings they do not change what was already uploaded just anything new going forward in that specific Video Category.

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