flip

You're in the edit suite and realize: the actors are sitting opposite each other, but suddenly one looks to the left, and the other does too — the eyeline is wrong. This is where the flip comes in. It's the horizontal mirroring of a shot, sometimes even of the entire footage. The image rotates inversely around the vertical axis, everything is mirrored. Left becomes right, right becomes left. Simple, but often the quickest solution in practice for continuity errors that were overlooked during shooting.

On set, this happens constantly: the cinematographer shoots the first take, the actor looks out of frame to the right. In the reverse shot — perhaps two hours later — the other actor is sitting on the wrong side, or the camera was positioned differently. In the edit, you notice that the spatial logic doesn't add up. Flipping the reverse shot can solve the problem without needing reshoots. It's a pragmatic rescue for continuity errors in shot-reverse-shot editing.

Technically, this is a non-issue in modern NLEs — After Effects, Premiere, Final Cut can do it in seconds. You select the clip and choose Flip Horizontal. But here's the catch: pay attention to details that are reversed by flipping. If an actor wears a watch on their left arm, it will be on their right arm after the flip. Text in the frame becomes readable in reverse. Scars, tattoos, the direction of car travel — everything is reversed. In some cases, you only realize during mastering that you shouldn't have flipped a shot. Therefore: always do a review with the director before finalizing.

The flip is also a tool for deliberate artistic choice. Sometimes you need a shot mirrored to change the composition of a shot without reshooting — for example, if the lighting or depth of field would look better on the other side. This is rarer, but legitimate in guerrilla productions or for last-minute solutions. Always remember: this is a technical workaround with visual side effects. Use it consciously, not thoughtlessly.