Hi Curtis this is a well publicised fact and is also in your instruction manual, even the Canon 1DX or 5D MkIII stops continuous recording at 29.59 mins. This limitation is both a recording and a crucial operational to stop your DSLR being classed as a Camcorder, in Europe this recording length in one take anyl onger would render this in different tax/duty class a camcorder and increase its price.
Primarily you have DSLR photographic camera that shoot video not the other way round.
To overcome this limitation you can record via HDMI to an Atmos Ninja or a device that will record hdmi output to a hard disk recorder or capture to a computer.
Shot, Edit and Enjoy
Freelance HD and DSLR camera producer and trainer.
Enjoying the fruits and passion of living life to the full.
United By Photography
http://unitedbyphotography.com