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Chang Liu
GitHub
commit
553dbfdc94
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vim-kakali translating
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How to record a region of your desktop as animated GIF on Linux
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============================================================
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### On this page
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1. [Gifine][1]
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2. [Gifine Download/Installation/Setup][2]
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3. [Gifine Usage][3]
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4. [Conclusion][4]
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It won't be a stretch to say - and you'll likely agree - that animated gifs have become a rage in the past few years. While one of the most popular uses of animated gifs is to add humor to the text-based conversation that people usually have online, there are many other areas where these animations prove to be really useful.
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Those in technical spheres usually use animated gifs to quickly describe how a problem or an error gets triggered. It's also a useful way of explaining how a particular feature in a software application works. You can easily use gifs in online forums, your company presentations, and more.
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Now, suppose you have various applications opened on your Linux desktop, and for whatever purpose, you want to create an animated gif out of your activity with a particular application that's occupying only a small area of your desktop. What would you do? Obviously, look for a tool that lets you do the same.
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If you've been looking for one such tool that lets you record a particular region of you desktop and then automatically convert the recording into an animated gif, then look no further, as in this tutorial, we will discuss a Linux command line utility that lets you do just that.
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Before we proceed, keep in mind that all the examples in this tutorial have been tested on Ubuntu 14.04 with Bash version 4.3.11(1).
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### Gifine
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The tool in question is [Gifine][5]. It is is basically a GTK application implemented in MoonScript using lgi. Gifine not only lets you record your desktop screen and create animated gifs or video, but also lets you stitch together short gifs or videos.
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According to the application's developer: "You can either load a directory of frames, or select a region of your desktop to record. After loading some frames, you can scroll through them and trim out what isn't necessary. When you've finalized the video you can export to gif or mp4.".
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### Gifine Download/Installation/Setup
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Before we go ahead and tell you the steps to download and install Gifine, it's worth mentioning that the tool has several dependencies that you need to install before installing the tool itself.
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The first dependency that you need to install is FFmpeg, which is basically a cross-platform solution to record, convert and stream audio and video. Following is the command that should install the tool:
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```
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sudo apt-get install ffmpeg
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```
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Next up is GraphicsMagick, which is basically an image processing system. "It provides a robust and efficient collection of tools and libraries which support reading, writing, and manipulating an image in over 88 major formats including important formats like DPX, GIF, JPEG, JPEG-2000, PNG, PDF, PNM, and TIFF," the tool's official website says.
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Following is the command to download and install it:
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```
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sudo apt-get install graphicsmagick
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```
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Next up is a tool dubbed XrectSel. It's basically an application that tells you the geometry of a rectangular screen region which you have selected by dragging the mouse/pointer. The only way to install XrectSel is from source, which you can download by heading [here][6].
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Once you've downloaded theXrectSel source code on your system, the next step is extract the downloaded archive and enter the top-level directory on a command line terminal. Once there, run the following commands:
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```
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./bootstrap
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```
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The above command is required if ./configure is not present
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```
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./configure --prefix /usr
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make
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make DESTDIR="$directory" install
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```
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Moving on, the last dependency is Gifsicle. It's a command-line tool for creating, editing, and getting information about GIF images and animations. Downloading and installing Gifsicle is quite easy - all you need to do is to run the following command:
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```
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sudo apt-get install gifsicle
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```
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So that was all about the dependencies. Now, let us come to the installation of Gifine. The following two commands will do the needful:
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```
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sudo apt-get install luarocks
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sudo luarocks install --server=http://luarocks.org/dev gifine
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```
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Please note that the second command above may give you the following error:
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```
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No package 'gobject-introspection-1.0' found
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```
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In that case, you need to install the package using the following command:
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```
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sudo apt-get install libgirepository1.0-dev
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```
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And then run the 'luarocks install' command again.
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### Gifine Usage
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Once you're done with the installation part, you can launch the tool using the following command:
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```
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gifine
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```
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The application's UI looks like this:
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[
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][7]
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So you have a couple of options here: record frames and load frames. If you click the Record rectangle button, then your mouse pointer gets converted into a +, allowing you to select a rectangular area on your screen. As soon as you are done selecting an area, the recording begins, and the 'Record rectangle' button is replaced by a 'Stop recording' button.
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[
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][8]
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As soon as you are done with the recording, click the 'Stop recording' button and you'll see that the Gifine window shows several buttons.
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[
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][9]
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The upper part of the UI contains the recording, which you can see frame by frame using the slider below it. Suppose you want to delete all the frames before frame 5 or after frame 50, then this can be done using the Trim left of and Trim right of buttons. Then there are also buttons to delete a particular frame, half the number of frames, as well as reset any frame cuts that you've made.
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Once you are done with all the editing part, use the Save GIF... or Save MP4... buttons to save the recording as an animated gif or a video. There are options to set frame delay, frame rate, and number of loops as well.
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Please keep in mind that "the recorded frames recorded aren't automatically cleaned up. You can find them in your `/tmp` dir if you want to reload a session. Use the load directory button on the initial screen.".
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### Conclusion
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There's not much of a learning curve associated with Gifine - all the features are available in the form of buttons, and the text on them makes their functionality self explanatory.
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The only issue for me was the installation part - installing so many dependencies one by one and then dealing with errors that may pop up could be a big no no for many. But otherwise, on the whole, Gifine is a nice tool that does what it promises, and if that's what you were looking for, do give it a try.
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Already a Gifine user? How has your experience been so far? Let us known in comments below.
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--------------------------------------------------------------------------------
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via: https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/
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作者：[Ansh][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/
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[1]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#gifine
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[2]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#gifine-downloadinstallationsetup
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[3]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#gifine-usage
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[4]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#conclusion
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[5]:https://github.com/leafo/gifine
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[6]:https://github.com/lolilolicon/xrectsel
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[7]:https://www.howtoforge.com/images/record-screen-to-animated-gif-on-linux/big/gifine-ui.png
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[8]:https://www.howtoforge.com/images/record-screen-to-animated-gif-on-linux/big/gifine-stop-rec.png
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[9]:https://www.howtoforge.com/images/record-screen-to-animated-gif-on-linux/big/gifine-post-rec.png
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@ -0,0 +1,153 @@
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如何在 Linux 上录制你的桌面 GIF 动画 ?
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============================================================
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### 本文导航
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1. [Gifine][1]
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2. [Gifine 下载/安装/配置][2]
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3. [Gifine 使用][3]
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4. [总结][4]
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不用我说，你也知道 GIF 动画在过去几年发展迅速。人们经常在线上文字交流时使用动画增添趣味，同时这些动画在很多其他地方也显得非常有用。
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在技术领域使用动画能够很快的描述出现的问题或者返回的错误。它也能很好的展现出一个软件应用产品的特性。你可以在进行线上座谈会或者在进行公司展示时使用 GIF 动画，当然，你可以在更多的地方用到它。
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现在，假设你的电脑桌面上打开了多个应用程序，或者无论出于什么目的，你想制作一个 GIF 动画来记录桌面上一个应用程序窗口的操作过程。你应该怎么做呢？显然，你需要一个工具来完成这件事。
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如果你正在寻找了这样一个可以记录桌面上部分区域的工具，并且它可以自动把录屏转化成 GIF 动画； 现在，本教程会介绍一个 Linux 命令行工具来实现你的需求。
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开始之前，你必须知道在本教程中所有的例子都是在 Ubuntu 14.04 上测试过的，它的 Bash 版本是 4.3.11(1) 。
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### Gifine
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这个工具的主页是 [Gifine][5] 。它基于 GTK 工具包，并且由 MoonScript 使用 lgi 库编写。Gifine 不仅能够录屏、创建动画或视频，而且能够用它来把几个小型动画或视频拼接在一起。
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引述这个工具的开发者的话：“你可以加载一个视频目录或者选择一个桌面的区域进行录屏。你加载了一些视频后，可以不用裁剪通过滑动滑块查看视频帧。最终完成录屏后可以导出为 gif 或者 mp4 文件。”
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### Gifine 下载/安装/配置
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在指引你下载和安装 Gifine 之前，应该指出安装这个工具时需要安装的依赖包。
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首先需要安装的依赖包是 FFmpeg , 这个包是一种记录、转化音频流以及视频的跨平台解决方案。使用下列命令安装这个工具;
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```
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sudo apt-get install ffmpeg
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```
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接下来是基于图像处理系统的 GraphicsMagick . 这个工具的官网说："它提供了一个稳健且高效的工具和库的集合，支持读写并且可以操作超过 88 种主要的图像格式，比如： DPX、 GIF、 JPEG、 JPEG-2000、 PNG、 PDF、 PNM 以及 TIFF 等"
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通过下面的命令安装：
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```
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sudo apt-get install graphicsmagick
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```
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接下来的需要的工具是 XrectSel 。在你移动鼠标选择区域的时候，它会显示矩形区域的坐标位置。我们只能通过源码安装 XrectSel ，你可以从 [这里][6] 下载它。
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如果你下载了源码，接下来就可以解压下载的文件，进入解压后的目录中。然后，运行下列命令：
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```
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./bootstrap
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```
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如果 configure 文件不存在，就需要使用上面的命令
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```
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./configure --prefix /usr
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make
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make DESTDIR="$directory" install
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```
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最后的依赖包是 Gifsicle 。这是一个命令行工具，可以创建、编辑、查看 GIF 图像和动画的属性信息。下载和安装 Gifsicle 相当容易，你只需要运行下列命令：
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```
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sudo apt-get install gifsicle
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```
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这些是所有的依赖包。现在，我们开始安装 Gifine 。使用下面的命令完成安装。
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```
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sudo apt-get install luarocks
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sudo luarocks install --server=http://luarocks.org/dev gifine
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```
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请注意第二个命令可能会返回下列错误：
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```
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No package 'gobject-introspection-1.0' found
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```
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你可以用下列命令安装这个包：
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```
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sudo apt-get install libgirepository1.0-dev
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```
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然后，再一次运行 'luarocks install' 命令。
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.
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### Gifine 使用
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完成安装之后可以使用下面的命令运行这个工具：
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```
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gifine
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```
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这个应用程序的 UI 是这样的：
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[
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][7]
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这里你可以进行两种操作：录视频帧或者加载视频帧。如果你单击了 Record rectange 按钮，你的鼠标指针处会变成一个 + ，这样便可以在你的屏幕上选择一个矩形区域。一旦你选择了一个区域，录屏就开始了，‘Record rectangule’ 按钮就会变成 'Stop recording' 按钮。
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[
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][8]
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单击 'Stop recording' 完成录屏，会在 Gifine 窗口出现一些按钮。
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[
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][9]
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用户界面的上半部分显示已经录制的视频帧，你可以使用它下面的滑块进行帧到帧的浏览。如果你想要删除第 5 帧之前或第 50 帧之后的所有帧数，你可以使用 Trim left of 和 Trim rigth of 按钮进行裁剪。也有可以删除特定帧数和删除一半帧数的按钮，当然，你可以重置所有的裁剪操作。
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完成了所有的裁剪后，可以使用 Save GIF... 或 Save MP4... 按钮将录屏保存为动画或者视频；你会看到可以设置帧延迟、帧率以及循环次数的选项。
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记住，“录屏帧数不会自动清除。如果你想重新加载，可以在初始屏幕中使用 load directory 按钮在 '/tmp' 目录中找到它们。“
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### 总结
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Gifine 的学习曲线并不陡峭 —— 所有的功能都会以按钮、文本的形式体现出来。
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对我来说，最大的问题是安装 —— 需要一个个安装它的依赖包，还要处理可能出现的错误，这会困扰很多人。否则，从整体上看，Gifine 绝对称得上是一个不错的工具，如果你正在寻找这样的工具，不妨一试。
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已经是 Gifine 用户？到目前为止你得到了什么经验？在评论区告诉我们。
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--------------------------------------------------------------------------------
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||||
via: https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/
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作者：[Ansh][a]
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译者：[vim-kakali](https://github.com/vim-kakali)
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||||
校对：[校对者ID](https://github.com/校对者ID)
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||||
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||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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|
||||
[a]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/
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[1]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#gifine
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[2]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#gifine-downloadinstallationsetup
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[3]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#gifine-usage
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[4]:https://www.howtoforge.com/tutorial/record-screen-to-animated-gif-on-linux/#conclusion
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[5]:https://github.com/leafo/gifine
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[6]:https://github.com/lolilolicon/xrectsel
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[7]:https://www.howtoforge.com/images/record-screen-to-animated-gif-on-linux/big/gifine-ui.png
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[8]:https://www.howtoforge.com/images/record-screen-to-animated-gif-on-linux/big/gifine-stop-rec.png
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[9]:https://www.howtoforge.com/images/record-screen-to-animated-gif-on-linux/big/gifine-post-rec.png
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