Launch the screen recorder and select either "Webcam" or "Both" in order to turn on the webcam for recording.
In the webcam options menu, you can flip the webcam video by placing a checkmark in the "Flip Horizontal" area. Once checked, your video will be immediately flipped and show as a live preview of the webcam. The live preview will remain flipped during the recording session. The effect can be removed later in the video editor if needed.
Once you have "Flip Horizontal" activated, click "OK" to exit the webcam settings window.
You can now begin your recording with your webcam video flipped by clicking the red "Rec" record button.
The Screencast-O-Matic video editor allows a user to flip horizontally any videos, screen recordings, or imported images.
Within the editor, click on the video recording or image that you would like to modify. In the case below, we have a webcam recording and will apply the Flip Horizontal effect. Select the webcam video's area, then click "Options" on the dialog that appears to the right.
Now that we have finished our edits, click "OK" or press Enter to accept these changes.