曾经用您的智能手机录制视频，然后在您的计算机上播放，却发现视频是上下颠倒或倾斜 90 度的？我曾多次遇到这种情况，最终不得不使用各种第三方软件(party software)手动修复视频。
在这篇文章中，我将讨论两个可用于修复颠倒视频的免费 Windows 程序：VLC Media Player 和 Windows Movie Maker(VLC Media Player and Windows Movie Maker)。两者之间的区别在于，对于前者，更改是暂时的，并且在程序中即时完成。使用Windows Movie Maker，您可以永久保存对文件的更改。
如果您只想在计算机上观看视频，那么临时修复可能是更好的解决方案。如果您需要上传视频或(video or share)与其他人分享，则应使用Movie Maker永久解决问题。
此外，我还将提及如何在Mac上通过免费在线服务(online service)执行此任务。
VLC 媒体播放器
让我们从VLC开始，它是我最喜欢的媒体播放器，不仅因为它可以播放损坏的视频文件(video file)，还因为它已经内置了几乎所有的视频编解码器。要在VLC(VLC)中旋转视频，首先打开您的视频文件(video file)以便它正在播放。
现在单击工具(Tools)，然后单击效果和过滤器(Effects and Filters)。
在“调整和效果”(Adjustments and Effects)对话框中，单击“视频效果(Video Effect)”选项卡，然后单击“几何(Geometry)”选项卡。
在这里，您可以通过两种方式调整视频的方向。翻转视频的最简单方法是选中“变换(Transform)”框，然后从下拉菜单中选择“旋转 180 度”。( Rotate by 180 degrees)如前所述，这只会解决VLC中的问题。如果您在另一个程序中播放视频，它仍然会颠倒。
请注意，您只需在VLC中执行一次。如果您关闭视频然后在VLC中再次播放，它会记住您的设置并将其应用于视频，因此您不必一遍又一遍地执行此操作。
此外，您可以检查旋转(Rotate)按钮，然后以您喜欢的任何角度倾斜视频。这是一种奇怪的选择，但它确实存在！
Windows 电影制作器
使用Windows Movie Maker，将视频旋转到正确的方向非常容易。加载剪辑后，您应该会在左侧看到预览，在右侧看到场景。
继续并单击“主页”(Home)选项卡，您将在功能区的最右侧看到“向左旋转”( Rotate Left)和“向右旋转”选项。(Rotate Right)
为了永久保存此修复程序，您必须保存您的电影文件(movie file)。单击文件(File)，然后单击保存电影(Save movie)。
Windows Movie Maker有很多用于保存电影文件(movie file)的选项，具体取决于您将在什么设备上观看。选择最能满足您需求的选项。另外，请务必阅读我关于使用Windows Movie Maker刻录视频(Windows Movie Maker)DVD的帖子。
RotateMyVideo.net
如果您不想将(t feel)程序下载到您的计算机上，您可以尝试使用免费的在线工具(online tool)来旋转视频。我使用的是RotateMyVideo.net。
单击选择视频(Pick Video)，然后选择您的视频文件(video file)。请注意，此服务的最大文件大小(file size)为 250 MB。此外，它不接受所有类型的视频文件，只接受(video file)MP4 和 AVI(MP4 and AVI)等流行格式。
视频上传后，您将在右侧看到它的预览。在左侧，您可以单击按钮来更改旋转、比例和色带。完成后，单击旋转视频(Rotate Video)按钮。
QuickTime 播放器
如果您使用的是Mac并且想要修复颠倒的视频，则必须使用QuickTime Player。打开视频文件(video file)，然后单击编辑(Edit)菜单。
您将看到Rotate Left、Rotate Right、Flip Horizontal 和 Flip Vertical(Flip Horizontal and Flip Vertical)的选项。如果您不导出(t export)文件，则更改只会在播放视频时临时发生。如果您想使用QuickTime保存它，请转到文件(File)-关闭(Close)，当它询问您是否要保存更改时，单击保存(Save)按钮。
如果您有一个倒置的视频，这些是旋转视频的最简单方法。如果您有任何问题，请随时发表评论。享受！
How to Fix Upside Down Videos
Εver record a video with your smartphone, then play it оn your computer and find that the video is upside dоwn or 90 degrees off? I’ve had that happen on several occasіons and I ended up having to manually fix the videos using various third partу software.
In this post, I’m going to talk about two free Windows programs that you can use for fixing upside down videos: VLC Media Player and Windows Movie Maker. The difference between the two is that with the former, the change is temporary and done on the fly in the program. With Windows Movie Maker, you can permanently save the changes to the file.
If you just want to watch a video on your computer, then the temporary fix is probably the better solution. If you need to upload the video or share it with someone else, then you should use Movie Maker to permanently fix the issue.
In addition, I’ll also mention how you can perform this task on a Mac and via a free online service.
VLC Media Player
Let’s start out with VLC, which is my favorite media player not only because it can play damaged video files, but also because it has pretty much every video codec built-in already. To rotate a video in VLC, first open your video file so that it is playing.
Now click on Tools and then Effects and Filters.
On the Adjustments and Effects dialog, click on the Video Effects tab and then click on the Geometry tab.
Here you can adjust the orientation of the video in two ways. The easiest way to flip the video is to just check the Transform box and then choose Rotate by 180 degrees from the drop down menu. As mentioned, this will just fix the issue in VLC. If you play the video in another program, it will still be upside down.
Note that you only have to do this once in VLC. If you close the video and then play it again in VLC, it will remember your settings and apply them to the video, so you don’t have to do it over and over again.
Also, you can check the Rotate button and then skew the video at any angle that you like. It’s kind of a strange option, but it exists!
Windows Movie Maker
Using Windows Movie Maker, it’s super easy to rotate a video to the correct orientation. Once you load your clip, you should see a preview on the left and the scenes on the right.
Go ahead and click on the Home tab and you’ll see a Rotate Left and Rotate Right option at the far right of the ribbon.
In order to permanently save this fix, you have to save your movie file out. Click on File and then Save movie.
Windows Movie Maker has a lot of options for saving your movie file depending on what device you will be viewing it on. Choose the option that best meets your needs. Also, be sure to read my post on burning a video DVD using Windows Movie Maker.
RotateMyVideo.net
If you don’t feel like downloading a program onto your computer, you could try a free online tool for rotating videos. The one I have used is RotateMyVideo.net.
Click on Pick Video and then choose your video file. Note that the maximum file size for this service is 250 MB. Also, it doesn’t accept every type of video file, only the popular formats like MP4 and AVI.
After the video has been uploaded, you will see a preview of it on the right. On the left, you can click the buttons to change the rotation, ratio, and color bands. When you are done, click the Rotate Video button.
QuickTime Player
If you are using a Mac and want to fix an upside down video, you have to use QuickTime Player. Open the video file and then click on the Edit menu.
You’ll see options for Rotate Left, Rotate Right, Flip Horizontal and Flip Vertical. If you don’t export the file out, the change will only occur temporarily while playing the video. If you want to save it using QuickTime, go to File – Close and when it asks you if you want to save the changes, click the Save button.
Those are the easiest ways to rotate a video if you have one that is upside down. If you have any questions, feel free to comment. Enjoy!
