Command to confirm the camera is recording and has achieved stable frame rate. Modern digital cameras like ARRI Alexa 35 are ready after 120ms.
Technical Details
Modern digital cinema cameras like the ARRI Alexa 35 achieve readiness in 120 milliseconds, while RED cameras require up to 300 milliseconds. With 35mm film cameras, the startup time varied depending on the model: the Arriflex 435 needed a 24-frame lead at 24fps (1 second), and the Panavision Millennium XL2 reached stable speed after 18 frames (0.75 seconds). The timecode starts synchronized with the first recorded frame. When stopping recording, mechanical cameras continue to run for another 3-8 frames, while digital systems stop immediately.
History & Development
The command "Rolling!" established itself in the 1920s with the introduction of motor-driven cameras like the Mitchell Standard. Previously, hand-crank cameras were started without an audible signal. In Hollywood, "Rolling!" became common as early as 1915, while in German-speaking regions, "Läuft!" only became established in the 1930s. With the introduction of magnetic tape sound recording in 1950, the command expanded to "Sound rolling - Camera rolling!". Digitization since 2005 has drastically reduced lead times and enabled immediate stopping without material loss.
Practical Use in Film
On "Das Boot" (1981), Wolfgang Petersen optimized the submarine scenes through precise "Rolling!" commands with hand signals, as engine noise drowned out verbal commands. Stanley Kubrick used extremely long camera runs of up to 20 minutes in "The Shining" (1980) to capture natural actor performances. Modern productions like "1917" (2019) coordinated "Rolling!" commands via radio between multiple cameras for seemingly continuous takes. The lead time today is compensated for by pre-roll functions, which record 3-10 seconds before the actual "Rolling!" command.
Comparison & Alternatives
"Rolling!" differs from "Standby!" (readiness command) and "Action!" (start of acting performance). While "Rolling!" is understood internationally, French crews use "Moteur!", and Italian crews use "Motore!". In documentary filmmaking, "Quiet Rolling" replaces the loud command to avoid disturbing authentic situations. In multi-camera productions, the script supervisor coordinates the simultaneous "Rolling!" of all units via timecode synchronization.