To use Video playback controls, select Media Controls from the Window menu or click Media Controls in the main toolbar.
When you play a movie, playback controls are displayed in the window.
Play/Pause will stop or start the movie.
Rewind will play in reverse at 200% speed if clicked on while the movie is playing, or will go back one frame if the movie is paused.
Fast-forward will play at 200% speed if clicked on while the movie is playing, or will go forward one frame if the movie is paused.
The Beginning and End buttons take you to the beginning or the end of the movie.
Setting the Loop checkbox will automatically loop a video back to the beginning when it reaches the end.
The controls also show a list of chapters if the movie has chapters. Double-clicking on a chapter name moves the playhead to the start of that chapter.