A computing system may include a first client computing device configured to locally generate a first local graphics surface, and a second client computing device configured to locally generate a second local graphics surface. A collaboration cloud computing service may cooperate with the first and second client devices to capture the first graphics surface from the first client device and share the first graphics surface from the first client device within the second graphics surface of the second client device, determine a media cloud source and playback control data associated with a video to be displayed in the first graphics surface of the first client device, and cause the second client computing device to independently stream the video from the media cloud source and play the video within the shared first graphics surface synchronously with playback of the video at the first client device based upon the playback control data.