Video Upload Limits

I am attempting to find all the places where in UNA it limits the file size of video uploads. I see the limits in the Permissions module. Is there another place in UNA where the file size is set? Is there an inherent limit within UNA that will limit the size of a video? My Permissions setting and server PHP limits are set to allow a certain size. However, a video under both of those size limits we are attempting to upload will not process on UNA. It will allow smaller sized videos of similar file extensions to upload and process. Any assistance or guidance is appreciated.