有没有注意到视频侧面或顶部和底部的那些烦人的黑条？通常，罪魁祸首是设置不正确的纵横比。在Movie Maker中，很容易以错误的纵横比(aspect ratio)保存电影，从而在您的最终产品中创建这些黑条。本教程将解释为什么会出现这些黑条，以及如何在Movie Maker for Windows 中消除它们。
为什么黑条出现(Do Black Bars Show Up)在Movie Maker 视频(Movie Maker Videos)中？
当您使用Movie Maker(Movie Maker)创建电影时，它会保存为.WMV文件。此.WMV可以具有以下两种纵横比之一：标准 (4:3)(Standard (4:3))和宽屏 (16:9)(Widescreen (16:9))。
这两种格式旨在适应您将在其上查看视频和幻灯片的显示器类型。例如，几乎所有纯平高清电视(HDTVs)都是宽屏 (16:9)(Widescreen (16:9))，较旧的电视和电脑显示器通常是标准 (4:3)(Standard (4:3))，嵌入的YouTube视频以宽屏 (16:9)(Widescreen (16:9))显示。
要了解为什么会出现黑条，最好将.WMV文件视为一个相框(picture frame)。就像如果照片没有填满整个帧，您需要在相框(picture frame)中进行填充一样，当视频没有填满整个帧时，黑条用于填充留下的空白空间。
通常，视频会被放大以适合框架，但为了避免扭曲图片或切断视频的一部分，您放置在框架内的项目将保持其纵横比(aspect ratio)（这是一件好事）。
因此，考虑到这一点，您的视频中会出现黑条，原因有两个：
- 您保存的Movie Maker视频（a.WMV 文件）的纵横比与您正在观看它的显示器的纵横比不匹配。
- 源视频(source video)的纵横(aspect ratio)比与您在Movie Maker中选择的纵横比(aspect ratio)不匹配。
虽然您无法始终预测观看视频的显示器的纵横比，但您可以确保.WMV文件的纵横比与源视频(source video)尽可能匹配。您实际上不必知道源文件的纵横比，因为如果纵横比不匹配，您将立即能够在(ratio mismatch)Movie Maker视频中看到黑条。因此，您所要做的就是选择看起来最好的纵横比。
如何在Movie Maker中设置(Movie Maker)纵横比(Aspect Ratio)
如果您在Movie Maker预览窗格中发现黑条，请展开“项目”(Project)选项卡。
在纵横比部分(aspect ratio section)，选择宽屏 (16:9)(Widescreen (16:9))或标准 (4:3)(Standard (4:3))。
检查预览窗格(preview pane)以查看黑条是否已被删除或减少。如果看起来更糟，只需切换回来。
重要提示：(IMPORTANT:)此设置会影响整个视频。您不能将一个剪辑的纵横比(aspect ratio)设置为 4:3，然后将其切换为下一个剪辑的 16:9。
如何将图片裁剪为 16:9 或 4:3
上述技巧适用于大多数视频文件，但对于照片和图像，问题变得更加严重。这是因为照片很少采用 16:9 或 4:3。因此，无论你选择哪一个，你都会得到黑色空间。
您需要做的是在将照片导入Movie Maker之前将它们裁剪为正确的纵横比。为此，请在照片库中打开您的照片(Photo Gallery)。现在选择其中一个并双击它。
展开裁剪(Crop)菜单并转到比例(Proportion)部分。Widescreen (16:9)已经有一个预设。如果您的Movie Maker视频设置为宽屏，请选择它。
重要提示：(IMPORTANT:)如果您的Movie Maker 纵横比(aspect ratio)设置为 4:3，则使用 4 x 3 设置。
现在，裁剪框(cropping frame)处于横向模式(landscape mode)很重要。要旋转框架，请单击(frame click) 裁剪(Crop)菜单中的旋转框架。(Rotate Frame)
接下来，将裁剪方块(cropping square)放置在您要包含在照片中的区域上。此外，您可以拖动角来缩放裁剪而不改变纵横比(aspect ratio)。
准备好后，单击裁剪(Crop)按钮。
现在关闭编辑窗口(editing window)。在将它们添加到Movie Maker(Movie Maker)之前，对您想要包含在项目中的所有照片执行此操作。
完成后，将您的照片重新添加到Movie Maker，您会看到它们不会有黑条。
结论
通过确保您的源视频或源照片(source video or source photos)与您的Movie Maker项目具有相同的纵横比(aspect ratio)，您可以减少或消除最终产品中的黑条。请注意，这不会纠正由于在屏幕上或在具有不同纵横比的播放器中显示视频而引起的任何问题，但它会从(aspect ratio)视频文件(video file)本身中删除任何黑条。另请注意，如果您的视频文件以 16:9 或 4:3 以外的(video file)纵横比(aspect ratio)拍摄，您将无法完全去除黑条。有关Movie Maker的更多提示(Movie Maker)，查看我们的一些相关文章，如果您有任何疑问或问题，请随时使用下面的评论表。
How To Get Rid Of Black Bars In Movie Maker
Ever notice those annoying black bars on the sides or along the top and bottom of a νidеo? Oftentimes, the culprit is an incorrectly set aspect ratio. In Movie Maker, it's easy to mistakenly save a movie in the wrong aspect ratio, thus creating these black bars in your final product. This tutorial will explain why these black bars appear and how you can get rid of them in Movie Maker for Windows.
Why Do Black Bars Show Up In Movie Maker Videos?
When you create a movie with Movie Maker, it's saved as a .WMV file. This .WMV can have one of two aspect ratios: Standard (4:3) and Widescreen (16:9).
These two formats are meant to accommodate the type of display on which you'll be viewing your videos and slideshows. For example, practically all flat-screen HDTVs are Widescreen (16:9), older TVs and computer monitors are usually Standard (4:3) and embedded YouTube videos are displayed in Widescreen (16:9).
To understand why black bars appear, it's best to think of the .WMV file as a picture frame. Just as you need padding in a picture frame if the photo doesn't fill up the entire frame, the black bars serve to fill in the empty space that is left behind when the video doesn't fill up the entire frame.
Usually, the video will be blown up to fit the frame, but in order to avoid distorting the picture or cutting off part of the video, the item you are placing inside the frame will maintain its aspect ratio (this is a good thing).
So, with that in mind, black bars will appear in your video for two reasons:
- The aspect ratio of your saved Movie Maker video (a.WMV file) does not match the aspect ratio of the display on which you are viewing it.
- The aspect ratio of the source video does not match the aspect ratio that you chose in Movie Maker.
While you can't always anticipate the aspect ratio of the display on which your video will be viewed, you can ensure that the aspect ratio of your .WMV file matches your source video as closely as possible. You don't actually have to know what aspect ratio your source files are in, since you'll immediately be able to see black bars in your Movie Maker video if there is an aspect ratio mismatch. So, all you have to do is choose which aspect ratio looks best.
How To Set Aspect Ratio In Movie Maker
If you notice black bars in your Movie Maker preview pane, expand the Project tab.
In the aspect ratio section, choose either Widescreen (16:9) or Standard (4:3).
Check the preview pane to see if the black bars have been removed or reduced. If it looks worse, simply switch back.
IMPORTANT: This setting affects the entire video. You cannot set the aspect ratio to 4:3 for one clip and then switch it to 16:9 for the next.
How To Crop Pictures To 16:9 Or 4:3
The above trick works for most video files, but the issue becomes more problematic with photos and images. That's because photos are rarely in 16:9 or 4:3. As such, no matter which one you choose, you get black space.
What you need to do is to crop your photos to the right aspect ratios prior to importing them into Movie Maker. In order to do this, open up your photos in Photo Gallery. Now choose one of them and double click it.
Expand the Crop menu and go to the Proportion section. There's already a preset there for Widescreen (16:9). Select it, if your Movie Maker video is set to widescreen.
IMPORTANT: If your Movie Maker aspect ratio is set to 4:3 then use the 4 x 3 setting.
Now, it's important that the cropping frame be in landscape mode. In order to rotate the frame click Rotate Frame in the Crop menu.
Next, position the cropping square over the area that you'd like to include in your photo. Also, you can drag the corner to scale the crop without altering the aspect ratio.
When you are ready click the Crop button.
Now close the editing window. Do this for all of the photos you want to include in your project before adding them into Movie Maker.
When you are done, add your photos back into Movie Maker and you'll see that they won't have black bars.
Conclusion
By ensuring that your source video or source photos are of the same aspect ratio as your Movie Maker project, you can reduce or eliminate black bars in your final product. Note that this won't correct any issues that arise from displaying your video on a screen or in a player with a different aspect ratio, but it will remove any black bars from the video file itself. Also note that if your video files are shot in an aspect ratio other than 16:9 or 4:3, you will not be able to remove the black bars completely. For more tips on Movie Maker, check out some of our related articles and if you have any questions or problems, do not hesitate to use the comments form below.
