Using forms mode, you can utilize keyboard shortcuts to make usability more efficient.
Space bar will play and pause the video.
You can press A to open the Keyboard Shortcut Dialog which also provides an audio description of the player and all of its features.
You have requested to see a portion of the video outside of the clip.
Click OK to switch to the full video or click if you would like to stay inside the clip. You can always go back to the clip with Tools and Clip Mode