the preview does not play correctly. the rotation does not look smooth, however it is smooth in the original animation you are purchasing. there must be a problem with the preview compression.
a technical Mechanical Background
1920×1080 + loop
a reflective metallic animation. Is deal for background or backdrops. great from high resolution projects with projections lighting mapping outdoor videos. great for auto shows or events, for sales shows and exhibitions for auto shops. looks slit and cool. smooth and modern, good for museums or gallery ambient animation. also for waiting room or loobies bobby. for building or calm environments. has a black finish or lack. close up view and stylish. great for titles or credits or opener or ending. for revealing names or logos. great for science fiction movies or tv shows. iron look as clean.