Use rotation for a sideways recording
Rotation turns the complete picture clockwise. Choose 90 degrees for a quarter turn to the right, 180 degrees for an upside-down recording, or 270 degrees for a quarter turn to the left. Leave horizontal mirroring off when rotation alone solves the problem. A quarter turn changes which side of the picture is upright; it does not remove material from the beginning or end. Check the exported orientation using an identifiable object, such as a doorway or a person standing upright.
Use mirroring to exchange left and right
Horizontal mirroring swaps the left and right sides of the image. Leave rotation at zero when you only need that reflection. Everything inside the frame changes sides, including text, logos, signs, and gestures. Mirroring can correct text that was already backward in the recording, but it will reverse text that was originally readable. Check a word or another familiar detail before deciding which version is correct. The control applies to the full picture, rather than to one selected object or person.
Combine the controls in the correct order
The tool rotates the picture first and applies horizontal mirroring afterward. This order matters when both controls are enabled: the left and right sides being exchanged belong to the rotated picture. For a sideways camera clip, first test the rotation with mirroring off, then decide whether the upright result also needs a reflection. The options apply throughout the recording. They do not switch direction halfway through a clip or reverse the order in which the recorded events take place.
Save the correction into the picture
The transformation is applied to the video picture instead of relying only on an orientation tag. The export uses MP4 with H.264 video settings and keeps supported source audio. Re-encoding can change image quality and file size, so retain the original if you may need another version. If the browser cannot preserve a picture or audio track, the operation reports an error. After downloading, check readable text and the first few seconds of movement to confirm both orientation and playback direction.
