sudo add-apt-repository ppa:maarten-baert/simplescreenrecorder
sudo apt-get update
sudo apt-get install simplescreenrecorder
Open software configuration:
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Choose to record "whole screen" or "record fixed area", here I choose "record fixed area", and then click the "select area..." button, the mouse turns into a cross, move to a vertex of the area to be recorded, Then hold down the left mouse button, drag the mouse to another vertex of the opposite corner, release the left mouse button, and select the area to be recorded. Click the "Continue" button to enter the next step.
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Click the "Choose..." button to choose where the recorded video file needs to be saved. Then choose the container, you can choose MKV, MP4, OGG and others, the corresponding different video formats, I choose "MKV" here, and then choose the video codec, be careful not to select the word "(not supported by the container)" , otherwise the video cannot be recorded. Click the "Continue" button.
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Prepare what you want to record, then click the "Start Recording" button, or minimize the window of the screen recording tool first, right-click the small SSR icon in the system tray, and select "Start Recording" from the pop-up menu, and the video starts recorded. Finally, after recording the video, remember to click "Save Video" at the bottom of the interface, or on the right-click menu of the SSR icon in the system tray, then you are done.
