Samir,
To elaborate, the animation file format that you save to in the transient results viewer can only be opened by HAMMER. It can be useful if you want to send an animation to another HAMMER user.
For users without HAMMER, there are a number of screen recording tools available that can quickly save to a common video file format. For example, the animations you see in our Air Valve Technote were saved to the .gif file format using Camtasia Studio.