In Normal view, click the slide that contains the movie or animated GIF file that you want to delete.
Click the the movie or animated GIF file, and then press DELETE.
To delete multiple movies or animated GIF files, repeat these steps for each slide that contains movie or animated GIF files that you want to delete.
Note: If the movie or animated GIF file is on a slide master, you need to delete it only once from the slide master. To display the slide master, on the View tab, in the Presentation Views group, click Slide Master.