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

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

                       Project 1    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                          when video motion  >  10

                                  sprite.
                                                                                            play sound  duck  until done
                     Step    4    Create the given script for the chosen sprite.
                                                                                            say  I am a duck!  for  2  seconds
                     Now, step in front of the webcam and wave your hand
                     or touch the sprite. The sprite will detect your movements, play the duck sound and

                     say, ‘I am a duck!’.

                                                                             Create a small project using Video
                                                                          Sensing blocks where the sprite changes
                                                                          its costume when it detects movement in
                                                                                     front of the webcam.

                         PRIVACY PRACTICES

                         Always ask for permission before turning on the webcam. Use it respectfully by not
                         recording others without their consent.

                                                                                                    Scratch Meets AI   85

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