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Once you insert a video into your presentation, you'll want to specify its size on the slide. Here are several different techniques you can use. I am working on slide 6 in my presentation, and I'll click on my video in the middle. The simplest way to resize your video is to use the handles in the corners. When you hold your cursor over one of the dots, it will turn into a double-headed arrow. Click and drag and your video will become larger or smaller. If you need your video to be larger, you may get mixed results, depending on how the media asset was encoded. You may find that the image loses resolution and gets fuzzy.
In that case, there is nothing you can do from inside PowerPoint. You will need to go back to original footage and export it at a larger size. Going smaller, though, will never be an issue. Now don't use the size handles or the top and bottom handles when resizing your video; you will lose your proportions and your imagery will come out short and fat or tall and skinny. If you want to specify the exact dimensions of your video, go up to the Movie Tools > Options tab. On the far right is a size box. You can type in specific Height and Width values, measured in inches, or you can use the spinner arrows to increase or decrease the dimensions in 0.1-inch increments.
Notice that as I adjust the width, the height changes, and vice versa. For even more control, click on the little Launcher button in the lower-right corner of the Size group. A dialog box opens, and I can see that I am on the Size tab. If needed, you can drag on the bar at the top of the window to move it so it doesn't cover your video clip. Here are the same Height and Width measures. Rotation is grayed out because it's only available on images, not on movies. Scale works exactly like Height and Width, but instead of showing its actual dimensions, you can see how its current size compares to its original size, as expressed in the percentage.
This Lock Aspect ratio check box causes the media to stay proportional, so that the height and the width adjust in tandem. If you want to adjust one, but not the other, uncheck this box. If this box is unchecked though, you run the risk of distorting your video image. So unless you have a specific circumstance, you will usually leave this checked. If you uncheck Relative to original picture size, after you change the dimensions and leave this dialog box, your new settings will become the new 100%, instead of staying at 148%; in other words, every change you make becomes the clip's new default size.
The drawback to unchecking the setting is that once an image is sized at 100%, making it larger may reduce your clip's clarity. If you are less concerned with the clip's size in inches--because, after all, your slide show is multimedia and not printed on paper-- you can use Best scale for slide show and choose your screen resolution from the dropdown list. Note, though, that your choice here must match your actual screen resolution, or your video will become distorted. I'll go ahead and turn this off again. There is a section here for cropping, but we'll cover that in a future video in this chapter.
At the bottom of this dialog box, you can see the original dimensions of the clip before you started adjusting it. If you don't like what you did, you can always click this Reset button to put it back to its initial default size and then start over again. I am going to go ahead and set my final width to 5 inches so that my height is 3.75, and then I'll click close. Now, I'll pick up my video and drag it to its new position on the slide. I can also use my arrows on my keyboard for more precision. Here's another way of getting to your size adjustments.
If you right-click on your video clip, you can choose Size and Position off the shortcut menu, and it goes right back to the dialog box we just explored. Adjusting the size of a video clip is extremely easy to do and between the object handles, the Ribbon, and the dialog box, PowerPoint allows you to set your size with just the level of complexity you need.
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