屏幕截图是捕捉屏幕上任何内容并将其存储(screen and store)以备后用的好方法。有时您需要截取屏幕截图以记住密码或截取(password or capture) 其他无法保存的其他相关信息。
其他时候，您需要捕获屏幕截图并将其发送给其他人，以便他们可以帮助您或查看您在做什么。最后，您可能希望在特定时间段内(time period)捕获多个屏幕截图，以便您可以看到计算机上发生的活动。
在本文中，我将向您展示如何使用免费程序以指定的时间间隔自动捕获计算机屏幕的屏幕截图。(computer screen)
自动截屏
Auto Screen Capture是SourceForge 上(SourceForge)的一个开源实用程序(source utility)，它有很多用于在Windows 机器(Windows machine)上捕获屏幕截图的选项。该程序适用于Windows Vista及更高版本，包括 Windows 10。
该程序的好处是它甚至不需要您安装它。您所要做(All)的就是下载EXE 文件(EXE file)并运行它。这很棒，因为它不会向您的注册表添加任何内容或将文件复制(registry or copy files)到您的系统目录中。
运行程序时，您会看到主界面分为几个不同的部分。左上角是一个日历，下面是程序的主要设置。在右侧，您可以预览连接到计算机的每个屏幕。如果您只有一台显示器，您将只能看到Screen 1的预览。
默认情况下，程序设置为Demo Mode ON和Schedule Off。这意味着当您打开程序时，将显示主界面，以便您可以配置选项。我们要做的第一件事是更改这些设置。单击(Click)左下角的选项按钮，然后单击(Options)在应用程序启动时打开演示模式(Turn on demo mode at application startup)以取消选中它。单击在应用程序启动时打开计划的屏幕捕获(Turn on scheduled screen capturing at application startup) 以检查该选项。
其余选项是不言自明的。如果您尝试偷偷截屏，最好取消选中在应用程序启动( Open this window at application startup)时打开此窗口、停止正在运行的截屏会话后打开此窗口以及在停止运行的截屏会话(Open this window after stopping the running screen capture session)后显示幻灯片(Show the slideshow after stopping the running screen capture session)。您还可以将屏幕截图存储在连接到计算机的任何驱动器上，包括网络驱动器。如果您想在多台计算机上安装程序并将所有屏幕截图直接保存到服务器、NAS等，这非常棒。
在Screen Capture选项卡上，顶部控制截屏的频率。默认情况下，程序设置为每秒截屏，这有点可笑。如果您不希望计算机上的所有空间在两天内用完，请将时间更改为更合理的时间，例如每 30 秒或每 2 分钟一次。我会保持检查初始捕获( Initial capture)，因为这包括活动窗口的附加屏幕截图。
该程序将每天创建两个文件夹，一个包含完整桌面的屏幕截图，另一个包含屏幕截图时鼠标所在位置的特写。这是一个很酷的小功能，可让您更详细地查看屏幕的活动部分。
同样默认情况下，程序设置为在 30 分钟后停止，因此如果您想要连续截屏或更长时间，请取消选中“限制(Limit) ”框或输入(box or type)更高的值。最后，分辨率(Resolution)框默认设置为 100%，但如果文件太大，您可以调整此设置。
如果向下滚动，您会看到您还可以设置截屏时间表。如果您希望程序自动开始截屏，而不必手动启动捕获过程(capture process)，请选中Start capture at和Stop capture at框。屏幕截图(Screenshots)只会在您在上面指定 的时间(time period)间隔(time interval)内拍摄。
最后，如果您向下滚动一点，您可以将图像类型更改为(image type)PNG以外的其他内容。您可以选择BMP、EMF、GIF、JPEG、TIFF 和 WMF(TIFF and WMF)。在我看来，最好的选择是JPEG，因为它会以最小的尺寸为您提供最好的质量。在我的测试中，一个 2560×1440 的完整桌面截图(desktop screenshot)大约是 160 KB。如果我使用PNG 格式(PNG format)，相同的屏幕截图高达 1.7 MB！
单击“开始捕获(Start Capture)”按钮开始捕获过程(capturing process)。该程序应该消失在任务栏中，在截屏时它会保留在那里。不幸的是，隐藏它的最佳方法是将其放在通知区域(notification area)的溢出部分中。
这个程序不是(program wasn)用任何隐身模式或(stealth mode or anything)类似的东西创建的，所以如果你需要谨慎的屏幕录制软件，这可能不适合你。截取一些屏幕截图后，您可以通过转到“幻灯片放映(Slideshow)”选项卡轻松查看它们。
如果您不想在程序中查看屏幕截图，也可以使用Explorer浏览文件夹。就我而言，顶级文件夹(level folder)是日期，然后在里面我有一个名为1的文件夹和一个名为5的文件夹。一个包含全桌面截图，另一个包含特写。
还值得注意的是，如果您使用具有多个虚拟桌面的Windows 10，该程序将仅捕获当时活动桌面的屏幕截图。因此，如果用户切换到桌面 3(desktop 3)，您将获得桌面 3(desktop 3)的屏幕截图。如果他们切换回桌面 2，那么您将在下一个屏幕截图中获得该桌面。
最后，如果您单击键盘(Keylogger)记录器选项卡，您可以将程序设置为在程序运行时记录所有击键。只需(Just)选中屏幕捕获时启用键盘记录( Enable keylogging while screen capturin)框即可(g box)。该文件将存储在与屏幕截图相同的位置。
键盘记录器非常好，因为它实际上列出了记录击键的程序。这有助于您理解文档中的所有文本。
总的来说，考虑到它是免费的，该程序运行得非常好。它仅适用于Windows，但对大多数人来说应该没问题。如果您需要按设定的时间(set time)间隔截取屏幕截图，这是最适合这项工作的程序。享受！
Capture Screenshots at Defined Time Intervals Automatically in Windows
Screenshots arе a great way tо capture whatever is on your screen and store іt for later use. Sometimes you need to capturе a screenshot to remember a password or capture some other pertinent information that yоu can’t save otherwise.
Other times you need to capture a screenshot and send it to someone else so that they can help you or see what you were doing. Finally, you may want to capture multiple screenshots over a certain time period so that you can see the activity occurring on the computer.
In this article, I’m going to show you how to use a free program to automatically capture screenshots of your computer screen at specified time intervals.
Auto Screen Capture
Auto Screen Capture is an open source utility on SourceForge that has quite a few options for capturing screenshots on your Windows machine. The program works with Windows Vista and higher, including Windows 10.
The good thing about the program is that it doesn’t even require you to install it. All you have to do is download the EXE file and run it. This is great because it doesn’t add anything to your registry or copy files into your system directories.
When you run the program, you’ll see the main interface is split up into a couple of different sections. At the top left is a calendar and below that are the main settings for the program. On the right-hand side, you have previews of each screen connected to your computer. If you only have one monitor, you’ll only see the preview for Screen 1.
By default, the program is set to Demo Mode ON and Schedule Off. This means that when you open the program, the main interface will show up so that you can configure the options. The first thing we want to do is change these settings. Click on the Options button at the very bottom left and then click on Turn on demo mode at application startup to uncheck it. Click on Turn on scheduled screen capturing at application startup to check that option.
The rest of the options are self-explanatory. If you are trying to capture screenshots stealthy, it’s a good idea to uncheck Open this window at application startup, Open this window after stopping the running screen capture session, and Show the slideshow after stopping the running screen capture session. You can also store the screenshots on any drive connected to the computer, including network drives. This is great if you want to install the program on several computers and have all the screenshots saved directly to a server, NAS, etc.
On the Screen Capture tab, the top section controls how often the screenshots will be taken. By default, the program is set to take a screenshot every second, which is a bit ridiculous. If you don’t want all the space on your computer gone in two days, change the timings to something more reasonable like every 30 seconds or every 2 minutes. I would keep Initial capture checked as that includes an additional screenshot of the active window.
The program will create two folders for each day, one with a screenshot of the full desktop and one with a close up of wherever the mouse is located at the time of the screenshot. This is a cool little feature that lets you see the screen in more detail only for the active section of the screen.
Also by default, the program is set to stop after 30 minutes, so if you want screenshots taken continuously or for a longer time, either uncheck the Limit box or type in a higher value. Finally, the Resolution box is set to 100% by default, but you can adjust this setting if the files are too big.
If you scroll down, you’ll see you can also set a schedule for taking screenshots. If you want the program to automatically start taking screenshots, rather than you having to manually start the capture process, check the Start capture at and Stop capture at boxes. Screenshots will only be taken during that time period at the time interval you specified above.
Finally, if you scroll down a little more, you can change the image type to something other than PNG. You can choose from BMP, EMF, GIF, JPEG, TIFF and WMF. In my opinion, the best option is JPEG as it will give you the best quality with the smallest size. In my tests, a full desktop screenshot at 2560×1440 was about 160 KB. If I used the PNG format, the same screenshot was a whopping 1.7 MB!
Click the Start Capture button to start the capturing process. The program should disappear into the taskbar, where it will remain while taking the screenshots. Unfortunately, the best thing you can do to hide it is put it inside the overflow section in the notification area.
This program wasn’t created with any kind of stealth mode or anything like that, so if you need discreet screen recording software, this might not work for you. Once some screenshots have been taken, you can easily view them by going to the Slideshow tab.
If you don’t want to view the screenshots in the program, you can also just browse through the folder using Explorer. In my case, the top level folder was the date and then inside I had a folder named 1 and a folder named 5. One contained full-desktop screenshots and the other contained close-ups.
It’s also worth noting that if you are using Windows 10 with multiple virtual desktops, the program will capture a screenshot of only the active desktop at that time. So if the user switches to desktop 3, you’ll get a screenshot of desktop 3. If they switch back to desktop 2, then you’ll get that desktop in the next screenshot.
Finally, if you click on the Keylogger tab, you can set the program to record all keystrokes while the program is running. Just check the Enable keylogging while screen capturing box. The file will be stored in the same location as the screenshots.
The keylogger is pretty nice in the sense that it actually lists out the program where the keystrokes were recorded. This helps you make sense of all the text in the document.
Overall, the program works really well, considering it’s free of charge. It only works on Windows, but that should be fine for most people. If you need screenshots at set time intervals, this is the best program for the job. Enjoy!
