A lot of game players will be under the third party screen video software or video game with the function of video, but the WIN10 official version has its own video function. Next, let me give you a detailed picture of how Windows 10 is recorded with its own video recording function.
First of all, you need to press the shortcut key win+g, Next, you will see the video bar appears. Click "Yes, this is a game". This allows you to record the game or record the desktop.
Then you'll see a multiple toolbar. Click on the Red dot button to start recording.
Next, the video is officially launched, you can see the video time bar appears.
At this point, you'll be amazed to find that the tool bar is missing. Actually it's just minimized. You can see it in the upper right corner.
Next, you can press the shortcut key Win+g again. Then you'll see the sidebar again. Then click the Red Square button. This is the end of the recording. The video is automatically saved to the default location.
Finally, if you want to open the video file, you can see in the "notice". You can click the notification icon in the lower-right corner of the desktop. You can then click the video file to open it. (Note: First you should log on to the Xbox.)