The Width and Height fields are used to control the frame size of the animation, as measured in pixels. The smaller the width and height values, the smaller the overall size, in kilobytes, the video animation file.
Aspect Ratio Lock
The Aspect Ratio Lock icon is used to maintain a fixed proportion of video at any frame size. Click on this lock to use a nonproportional frame size in your video animation.
The Frame Rate drop-down list is used to select the number of frames of animation per second (fps) of time in the presentation. The more frames per-second, the smoother the video animation. However, doubling the frame rate generally doubles the rendering time as well as the final size of the video. A setting between 8 and 10 is considered the minimum required for to produce smooth movement in your video animation. You might consider using a frame rate of 3 frames per-second while testing video animation export.
Loop to Starting Scene
The Loop to Starting Scene option is used to generate an additional video segment that animates from the last scene of your presentation to the first (forming a continuous loop of video).
The Anti-Alias option is used to smooth the exported image. This option can increase the export time, but helps to reduce jagged lines and pixilated artifacts in images.
The Codec option is used to specify which codec, or compression plug-in, to apply to your video animation.
Play When Finished
The Play When Finished option is used to start your default video player and play exported video animation file after it has been created.
Always Prompt for Animation Options
The Always Prompt for Animation Options option is used to display the Animation Export Options dialog box every time a video animation is created.