You may have noticed that videos with the autoplay feature are muted in browsers like Chrome or Safari browsers. This means that, even when the video is automatically played when the viewers open the dynamic landing page or wherever Pirsonal Player is embedded, the videos have no sound.
The reason for this is because Google and Apple both recently changed how their software handles autoplaying videos. They want to benefit user experience and believe that muted videos with autoplay are less intrusive.