When presenting your prezi, you can set it to play automatically with Prezi’s Autoplay feature. You control the speed your prezi plays at by setting the time interval between path steps. The Autoplay feature will automatically put your prezi on a loop so your audience can enjoy it all over again.
Check out this tutorial to learn about using autoplay in Prezi:
Click the clock icon in the bottom-right corner of your screen. Select the desired time interval between path steps and then sit back and watch as your prezi starts playing.
To stop your prezi from auto-playing, select the clock icon again and click 'Off'. Alternatively, you can click either the next or previous arrows at the bottom of your screen to disable autoplay. The same effect can be achieved by tapping either the LEFT or RIGHT arrow keys on your keyboard.
The same steps can be taken to autoplay an embedded prezi.
For instructions on how to autoplay a prezi on an iPad or iPhone, click here.