The Animation Speed settings enable you to scale the animation to speed it up or slow it down without having to manually adjust the number of frames between keyframes in the animation.

The Approximate Animation Time is calculated with the following information: total number of frames in the animation, the number of repetitions, the frame rate (regardless of whether you are saving to a movie or not), and any animation speed adjustments.

Selecting an animation speed of Normal does not scale the animation by any factor.

Selecting an animation speed of Slower slows down the animation by adding sufficient additional frames to achieve the specified factor. Selecting Generate more frames, spread evenly automatically and transparently adds additional frames between keyframes. You will see the effect of this the next time you play the animation. This results in higher quality animations, but will take longer to compute because of the additional frames to interpolate. Selecting Duplicate frames when saving movie duplicates existing frames when generating the final movie output. The effect of this will be visible only when playing back the movie; you will see no effect when playing the animation in CFD-Post. This option is faster, but the quality of the movie may suffer: it may look a little jerky.

Selecting an animation speed of Faster speeds up the animation by removing sufficient frames to achieve the specified factor. Selecting Generate fewer frames, spread evenly automatically and transparently removes some of the frames between keyframes. You will see the effect of this next time you play the animation. The fewer frames between keyframes will be interpolated smoothly, as if you had reduced the number of frames manually. Selecting Skip frames when saving movie skips existing frames only when generating the final movie output. The effect of this will only be visible when playing back the movie file; you will see no effect when playing the animation in CFD-Post. This option is slower because all frames will be played in CFD-Post, but only some of the frames will be used to generate the movie.

The Transient Case setting is effective only for transient simulations and controls the way in which timesteps are selected. A particular frame is calculated. Sequential Interpolation evenly distributes frames over each transient output file. Timestep Interpolation evenly distributes frames based on the timestep number associated with each transient output file. TimeValue Interpolation evenly distributes frames based on the time value associated with each transient output file.

If you have selected Save Movie (see Sweep Animation), selecting Save Frames As Image Files will prevent the deletion of the animation frame files from the temporary directory, where they are stored by default.

Selecting this option enables you to specify where you want the animation files to be saved by entering a path in the Directory field.

The rate (in frames per second) at which the movie will be generated. The movie viewer may also dictate the playback rate.

Select a Quality from: Highest, High, Medium, Low, or Custom.

With the Custom setting, you may specify the Variable Bit Rate by clearing the Variable Bit Rate toggle and entering a bit rate. Reduce the Bit Rate value to lower the file size (and the file playback quality).

A single cycle of an animation loop starts and ends at the same frame. If you repeat a loop, that frame is encoded twice at the end of each cycle, leading to a brief pause at that point in the animation. Enable this setting to smooth the playback of repeated loop animations.