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    This block turns the webcam on, off or flips the
                                              turn video  on
                                                                  video feed.

                                                                  This block is used to control the visibility of the video
                                          on
                                     set video transparency to  50
                                                                  feed from the webcam.

                              Factbot

                       The ‘set video transparency to ()’ block sets how transparent the video is. 0 shows the video clearly,
                       100 hides it completely.

                      Project       Sprite Reacts When You Move

                     Create a simple  project where  the  sprite reacts to your
                     movements captured by the webcam. To create a simple project

                     using the Video Sensing extension, follow the given steps:

                     Step 1:  Click the Add Extension           button.

                     Step 2:  Select Video Sensing extension.

                     Step 3:  Remove the default sprite and add a new sprite.

                     Step 4:  Create the given script for the chosen sprite.                           when video motion  >  10

                     Now, step in  front of  the webcam and  wave your hand  or                 play sound  duck  until done
                     touch the sprite. The sprite will detect your movements, play
                                                                                                say  I am a duck!  for  2  seconds
                     the duck sound and say, ‘I am a duck!’.

                                                                         Designing Games and Storyboard in Scratch 3   79

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