This video was just released by the NTSB, and includes forward looking cab cameras from both locomotives. You get a first hand view of the collision and derailment, as seen by the engineer of both trains.
BNSF Railway Train Derailment and Subsequent Train Collision
Published on Feb 7, 2017
Casselton, North Dakota
December 30, 2013
The video comes from the forward-facing on-board image recorders from the two trains involved in the accident. Video from the Grain Train lead locomotive 6990 was downloaded from the undamaged GE Lococam on-board image recorder. Parametric data from the Grain Train lead locomotive 6990 was downloaded from the undamaged event recorder. Video from the Crude Oil Train lead locomotive 4934 was obtained from data transmitted wirelessly when the emergency brakes were applied, and parametric data was downloaded from the trailing distributed power unit locomotive 6684.
(Full details contained at video link)