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If your video is under or overexposed, you can adjust the brightness and contrast right inside PowerPoint without having to open up third-party video editing software. It's easy. Here's how. On Slide 4, I have our 90- second TV spot and it's overexposed. You can see how overly bright it is. I'd like to darken this clip a little. Click on the media clip and then under the Video Tools tab on the Format Ribbon, look over on the far left side in the Adjust group and there's a button with the sun on it that says Corrections.
Click on it and a grid of 25 squares will open. The current levels are in the very center with the box around them. Brightness: 0% (Normal) and Contrast: 0% (Normal). As you hold your cursor over the other boxes, you can see your media clip get brighter and darker. Brightness is the amount of light or exposure in the media clip. It goes from left to right, low to high. Low brightness is almost black. High brightness is almost white.
Contrast is the difference between the lightest and darkest parts of the picture. Low contrast is at the top and high contrast is at the bottom. With high contrast, whites are bright and blacks are dark. With low contrast, they meet in the middle and become much more gray. It's always worth taking to look at these corrections to see if they'll make a difference in the appearance of your video. If you find the one you like, click on it and your video will be corrected to that level of brightness and contrast. I'm going to choose Brightness: -20% and Contrast: 0%.
Now, if these presets aren't perfect, you can also fine-tune them. Start by choosing one that's close like we just did. Then go back up to the Corrections button and choose the Option at the very bottom, Video Corrections Options. A dialog box will open and on the left-hand side you can see that we're in the Video section. If your dialog box is covering your video clip, move it off to the side. The second presets button down under Brightness and Contrast has the same presets we were just using. Below that, Brightness and Contrast both have sliders that you can drag back and forth, and spinners that you can use to move them up and down.
If you want, you can also type values into these boxes. If you don't like what you see, you could always click the Reset button to remove all of your adjustments to start over again, but I'd like the way this looks. So I'm going to go ahead and click Close at the bottom. Now, your media clip has been adjusted perfectly. The ability to perform color corrections on your media clips right inside PowerPoint is much easier than working in a video editing application.
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