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Discover how to integrate and enhance video and audio to create a more engaging PowerPoint presentation. In this course, author Alicia Katz Pollock emphasizes the technical details necessary to make a multimedia presentation work: from working with appropriate file formats, to applying video styles, to reducing the file size of multimedia presentations for sharing.
If you ever saved a PowerPoint slideshow from someone else and would like to save its video files, sounds, and images into separate files to use somewhere else, here's a neat little trick you can use to extract all the audio-visual content. The trick is that in PowerPoint 2010, PowerPoint files are actually ZIP files, containers of all the smaller files that make up the presentation. What we're going to do is convert this PowerPoint presentation into a ZIP file so that Windows can open it and extract all the files from inside it.
The first thing that I need to do is be able to work with all the extensions at the ends of my filenames. If you can see .pptx at the end of your filename, then you're all set. You don't have to do this step, but because I can't see it, I need to go down to the Start menu and then click on Control Panel on the right. I'll click on Appearance and Personalization. Down near the bottom of the list, look for Folder Options and click on that.
Now, go up to the second tab that says View and look for Hide extensions for known file types and turn off the checkmark in front of that and then click OK. And then close the Control Panel. Now I can see .pptx at the end of my filename. Our next step is to duplicate the file so that we're not touching the original PowerPoint presentation. Right-click on the file that you want, choose Copy, right-click anywhere in the white area, and choose Paste.
We now have a copy of the file. Right-click on it one more time and choose Rename. Now, click at the very end and Backspace over pptx. Type in ZIP instead and press Enter. We get an alert message saying that if we change the filename extension the file might become unusable. Are we sure we want to change it? Well, our PowerPoint will become unusable but our ZIP file is going to come in very handy. Click Yes.
I can see that the icon in front of it has now changed to a compressed ZIP folder. Double-click on the folder. Now we can see what's inside it. Double-click on the ppt folder and then double-click on the media folder. Now I can see all of my original images, my WMV movie files and my WMA sound file. When I double-click on any one of them, they'll open up in Windows Media Player. (Music playing) So now they're all individual files.
Being able to extract the movies, sounds, and images from your PowerPoint files can come in very handy if you don't have the original source files and you want to use them in other projects or alter them in any way.
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