Script Lock

Script Lock

Definition and Significance

Script lock marks the official moment in preproduction when the screenplay is declared final and no additional revisions are allowed. This freeze ensures that departments—locations, art, wardrobe, and camera—can proceed with detailed planning based on stable page counts and scene breakdowns.

Process and Stakeholder Coordination

The lock decision involves producers, director, writer, and department heads confirming that all narrative and logistical issues are resolved. A locked script is distributed to crew members, who use it to generate shooting schedules, call sheets, and technical breakdowns.

Implications for Production

Locking the script minimizes costly changes during shooting, reducing the risk of schedule overruns and budget inflation. Any post-lock changes require formal change orders, incurring additional fees and potential union penalties.

Common Exceptions and Contingencies

While the locked script is sacrosanct, minor on-set rewrites—such as adjusting dialogue or repositioning a scene—may occur to address unforeseen challenges. These revisions are documented and communicated through daily production reports to maintain clarity.