> Reducing the Frame Rate
> The NTSC video standard frame rate is 30 FPS. This is the standard for videos produced in North America. However, this standard is based on creating a smooth representation of video motion captured in the real world and may not be necessary for your project.
> For example, if you specify 30 frames per second, the output will be smooth, but the file will be about twice as large as a 15 fps video file. You may find that a 10 fps or 15 fps encoding is very acceptable for your audience. Reducing the frame rate can drastically reduce the size of the video file.
> You should experiment with codec settings to get a sense for what size and frame rate works best for you.