ipad iphone开发_如何在iPhone或iPad上编辑视频

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It’s easier than ever to edit and share videos directly from your iPhone or iPad. In iOS 13, Apple added a range of new video-editing tools. You can now crop, rotate, and perform other video-editing actions without a third-party app.

直接从iPhone或iPad编辑和共享视频比以往任何时候都容易。在iOS 13中，Apple添加了一系列新的视频编辑工具。现在，您无需第三方应用即可裁剪，旋转和执行其他视频编辑操作。

如何在iPhone或iPad上修剪视频 (How to Trim Videos on an iPhone or iPad)

Trimming a video is one of the most basic edits you can perform. While you can trim before you share in some apps, like Instagram, you can also easily do this in the Photos app.

修整视频是您可以执行的最基本的编辑之一。虽然可以在共享某些应用程序(如Instagram)之前进行修剪，但也可以在“照片”应用程序中轻松进行此操作。

Follow these steps to trim your video:

请按照以下步骤修剪视频：

Select the video you want to trim.选择您要修剪的视频。
Tap “Edit” in the bottom-right corner.点击右下角的“编辑”。
You should now see a Play button and the video’s timeline. Use the arrow on the left to change the video’s start point, or the arrow on the right to change the video’s endpoint.现在，您应该看到“播放”按钮和视频的时间轴。使用左侧的箭头更改视频的起点，或使用右侧的箭头更改视频的终点。
Tap the Play button to preview your edits.点击播放按钮预览您的编辑。
When you’re happy with your edits, tap “Done,” and then choose “Save Video” or “Save Video as New Clip” to duplicate.当您对编辑感到满意时，请点击“完成”，然后选择“保存视频”或“将视频另存为新剪辑”进行复制。

Video editing in iOS is nondestructive, meaning if you choose “Save Video,” you won’t permanently lose any footage. At any time, you can re-edit the video to include the footage you trimmed.

iOS中的视频编辑是非破坏性的，这意味着，如果您选择“保存视频”，则不会永久丢失任何素材。您随时可以重新编辑视频，以包含修剪过的素材。

如何在iPhone或iPad上裁剪和旋转视频 (How to Crop and Rotate Videos on an iPhone or iPad)

Previously, you had to use a third-party app to correct video orientation. Now, in iOS 13, you can crop and rotate your videos.

以前，您必须使用第三方应用程序来纠正视频方向。现在，在iOS 13中，您可以裁剪和旋转视频。

Follow these steps to rotate a video:

请按照以下步骤旋转视频：

Select the video you want to rotate or crop.选择要旋转或裁剪的视频。
Tap “Edit” in the bottom-right corner.点击右下角的“编辑”。
At the bottom of the screen, tap the Rotate/Crop icon (see image below).在屏幕底部，点击“旋转/裁剪”图标(请参见下图)。
In the top-left corner, tap the Rotate 90 degrees icon (the box with an arrow above it). Tap the button as many times as necessary until you find the right aspect ratio.在左上角，点击“旋转90度”图标(其上方带有箭头的框)。视需要多次点击按钮，直到找到合适的宽高比。
Tap “Done” in the bottom-right corner to finalize your edit.点击右下角的“完成”以完成您的编辑。

如何在iPhone或iPad上合并视频 (How to Merge Videos on an iPhone or iPad)

You’ll need a third-party app to merge videos on your iPhone or iPad. Fortunately, Apple offers iMovie for free, which makes it easy to merge two or more videos into a finished production.

您需要第三方应用程序才能在iPhone或iPad上合并视频。幸运的是，Apple免费提供了iMovie，可以轻松地将两个或更多视频合并到成品中。

Follow these steps to merge two or more videos:

请按照以下步骤合并两个或多个视频：

Download iMovie for free on your iPhone or iPad.

在iPhone或iPad上免费下载iMovie 。
Launch iMovie, and you’ll see the “Projects” screen. Tap the plus sign (+) to start a new project, and then tap “Movie” when prompted.启动iMovie，您将看到“项目”屏幕。点击加号(+)开始一个新项目，然后在出现提示时点击“电影”。
Select the videos you want to merge (you can add more later). Grab the edges of each video to trim clips directly in this screen.选择要合并的视频(以后可以添加更多视频)。抓住每个视频的边缘以直接在此屏幕中修剪剪辑。
With your clips selected, tap “Create Movie” at the bottom.选择剪辑后，点击底部的“创建电影”。

Your selected clips are placed on a video timeline one after the other. To trim them, tap your videos to select them, grab the edges of each frame, and then drag them down to size.

您选择的剪辑一个接一个地放置在视频时间轴上。要修剪它们，请点按您的视频以选择它们，抓住每一帧的边缘，然后将它们向下拖动到适当的大小。

If you want to reorder your videos, tap and hold one until it floats. Then, drag it left or right to move it backward or forward on the timeline. Release it in front of another clip to place it after that clip.

如果要重新排序视频，请点击并按住其中一个直到浮动。然后，将其向左或向右拖动以在时间轴上向后或向前移动。将其释放到另一个剪辑的前面，以将其放置在该剪辑之后。

You can also change the video transition between each clip. To do so, just tap the transition icon between videos on the timeline.

您还可以更改每个剪辑之间的视频过渡。为此，只需在时间轴上的视频之间点击过渡图标。

When you’re finished, follow these steps to export your movie:

完成后，请按照以下步骤导出电影：

Tap “Done” in the top-left corner.点击左上角的“完成”。
Press the Play button to preview your project, and then tap the Share button to export it.按“播放”按钮预览项目，然后点按“共享”按钮将其导出。
Use the app icons to choose where you want to share your video, or tap “Save Video” to export it directly to Photos.使用应用程序图标选择您要共享视频的位置，或点击“保存视频”将其直接导出到照片。

如何应用和删除视频过滤器 (How to Apply and Remove Video Filters)

Just as you can with photos, you can shoot videos with filters in the native iOS app. Also the same as photos, videos you shoot with a filter are nondestructive, which means you can change or remove the filter at any point.

就像照片一样，您可以在本机iOS应用中使用滤镜拍摄视频。与照片相同，使用滤镜拍摄的视频是非破坏性的，这意味着您可以随时更改或删除滤镜。

Follow these steps to add, change, or remove a filter:

请按照以下步骤添加，更改或删除过滤器：

Select the video to which you want to apply a filter.选择要对其应用过滤器的视频。
Tap “Edit” in the bottom-right corner.点击右下角的“编辑”。
At the bottom of the screen, tap the Filters icon (see the image below).在屏幕底部，点击“过滤器”图标(请参见下图)。
Scroll to preview the filters, and then select one or choose “Original” to remove all filters.滚动以预览过滤器，然后选择一个或选择“原始”以删除所有过滤器。
Tap “Done” at the bottom right and wait for your filter to apply.点击右下角的“完成”，然后等待您的过滤器应用。

The size of the video, the quality at which it was shot, and the age of your device determine how long you’ll have to wait for the filter to apply.

视频的大小，拍摄的质量以及设备的使用时间决定了您必须等待多长时间才能应用过滤器。

如何调整视频曝光，对比度等 (How to Adjust Video Exposure, Contrast and More)

You can also now adjust various image parameters on videos in iOS 13 just as you can with photos. iPhone and iPad owners now have access to a full gamut of editing tools, including automatic enhancement. These changes are also nondestructive, so you can undo them in the future.

您现在也可以像处理照片一样，在iOS 13中调整视频上的各种图像参数。 iPhone和iPad所有者现在可以使用全部编辑工具，包括自动增强功能。这些更改也是非破坏性的，因此您将来可以撤消它们。

Follow these steps to adjust a video’s exposure, contrast, and more:

请按照以下步骤调整视频的曝光度，对比度等：

Select the video you want to edit.选择您要编辑的视频。
Tap “Edit” in the bottom-right corner.点击右下角的“编辑”。
At the bottom, tap the Adjustments icon (see image below).点击底部的调整图标(见下图)。
Scroll through the various image attributes, and move the slider to adjust the image.滚动浏览各种图像属性，然后移动滑块以调整图像。
When you’re happy with your edits, tap “Done.”当您对修改感到满意时，请点击“完成”。

You can adjust all the following parameters:

您可以调整以下所有参数：

Exposure接触
Highlights强调
ShadowsUndertow
Contrast对比
Brightness亮度
Black Point黑点
Saturation饱和
Vibrancy充满活力
Warmth保暖
Tint着色
Sharpness清晰度
Definition定义
Noise Reduction降噪
Vignette小插图

The best way to learn what each of these settings do is to play around and experiment with them.

学习这些设置的最佳方法是进行试验并进行实验。

如何将视频还原为原始状态 (How to Revert a Video to Its Original State)

You can revert any video or photo to its original state with a tap in the Photos app. To do so, just find the edited video, tap “Edit” in the bottom-right corner, and then tap “Revert.”

您可以在“照片”应用中点击以将任何视频或照片恢复为原始状态。为此，只需找到已编辑的视频，请点击右下角的“编辑”，然后点击“还原”。

This works for both photos and videos. It reverts any trimming, filters, image adjustments, rotation, or cropping you applied.

这适用于照片和视频。它会还原您应用的所有修剪，滤镜，图像调整，旋转或裁剪。

使用iMovie创建预告片和更丰富的作品 (Create Trailers and Richer Productions with iMovie)

iMovie is Apple’s free consumer-grade video editing app. It allows you to “linear edit,” which means editing video in a single track (rather than multitrack editing, which allows for more complex operations).

iMovie是Apple的免费消费级视频编辑应用程序。它允许您“线性编辑”，这意味着在单个轨道中编辑视频(而不是多轨道编辑，后者允许更复杂的操作)。

iMovie is an easy-to-use video editor that allows you to place videos, photos, and audio on a timeline. You can also record a voiceover, shoot video directly to the timeline, or import other files from your file system or iCloud.

iMovie是易于使用的视频编辑器，可用于将视频，照片和音频放置在时间轴上。您还可以录制画外音，将视频直接拍摄到时间轴，或从文件系统或iCloud导入其他文件。

When you first start an iMovie project, tap “Movie” for regular projects, or “Trailer” to make an automated video in the style of a movie trailer.

首次启动iMovie项目时，请点按“电影”以显示常规项目，或点按“预告片”以制作电影预告片样式的自动视频。

In Movie mode, tap the plus sign (+) to add media to the timeline. Tap a clip to edit it, add text, change the playback speed, or add filters.

在电影模式下，点击加号(+)将媒体添加到时间线。点按一个剪辑进行编辑，添加文本，更改播放速度或添加过滤器。

If you want to make fine adjustments to a video (exposure, contrast, and so on), you have to do so in the Photos app before you add it to your timeline.

如果要对视频进行精细调整(曝光，对比度等)，则必须先在“照片”应用中进行调整，然后再将其添加到时间轴中。

使用Lumafusion将编辑提升到新的水平 (Take Editing to the Next Level with Lumafusion)

iMovie is useful but limited. Since Apple hasn’t released a version of its professional video editing app, Final Cut, for iOS, it’s up to third-party developers to fill in the gap.

iMovie有用但有限。由于Apple尚未针对iOS发布其专业视频编辑应用程序Final Cut版本，因此由第三方开发人员来填补空白。

Lumafusion is currently the best professional video-editing app for iPhone and iPad. It provides you with six tracks for audio and video, and six more for other audio, including music, voiceovers, or sound effects.

Lumafusion目前是适用于iPhone和iPad的最佳专业视频编辑应用程序。它为您提供了六个音频和视频轨道，以及六个其他轨道，用于其他音频，包括音乐，画外音或声音效果。

This app contains the following features that are normally only available in professional editors:

此应用程序包含通常仅在专业编辑器中可用的以下功能：

Markers标记物
The ability to link or unlink clips链接片段的能力
Keyframes for audio levels and panning音频电平和声像的关键帧
Audio filters and equalization音频滤波器和均衡
Effect layering效果分层
The ability to copy and paste clip attributes复制和粘贴剪辑属性的能力
Custom aspect ratios自定义宽高比
A wide range of supported frame rates多种支持的帧速率

You can get Lumafusion for $29.99 in the App Store, which might seem expensive for an iOS app. However, it’s a bargain compared to professional video-editing software, like Final Cut Pro X on a Mac ($299.99) or an Adobe Premiere Pro subscription (around $240 annually).

您可以在App Store中以29.99美元的价格购买Lumafusion ，对于iOS应用而言，这似乎很昂贵。但是，与专业视频编辑软件相比，这是便宜的东西，例如Mac上的Final Cut Pro X (299.99美元)或Adobe Premiere Pro订阅(每年约240美元)。

If you want to make the most of your device’s video-shooting abilities, check out FiLMiC Pro.

如果您想充分利用设备的视频拍摄功能，请查看FiLMiC Pro 。

拍摄，编辑，分享 (Shoot, Edit, Share)

It’s becoming increasingly common for video professionals, journalists, and hobby filmmakers to shoot, edit, and share their projects from a single device. If you go this route, your biggest hurdles are likely to be battery life and disk space.

视频专业人员，新闻工作者和业余制片人通过单一设备拍摄，编辑和共享他们的项目正变得越来越普遍。如果您走这条路，最大的障碍可能是电池寿命和磁盘空间。

Make sure you plug into an outlet if you’re going to be editing video. To solve space issues, you might want to upgrade your iCloud storage plan, so you can enable the iCloud Photo Library. This offloads your entire media library to the cloud, but you’ll need a reliable internet connection if you want to use the videos stored online in your projects.

如果要编辑视频，请确保插入电源插座。要解决空间问题，您可能需要升级iCloud存储计划，以便可以启用iCloud照片库。这样可以将整个媒体库卸载到云中，但是如果要使用在线存储在项目中的视频，则需要可靠的Internet连接。

Looking for a new video project? Learn how to use green screen with your iPhone!

寻找新的视频项目？了解如何在iPhone上使用绿屏！

翻译自: https://www.howtogeek.com/509024/how-to-edit-video-on-your-iphone-or-ipad/

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