Rolling shutter
Also known as: jello effect, jello, skew
A distortion caused by a sensor reading the frame line by line, so fast motion or vibration makes straight lines lean, wobble or look like jelly.
Updated
What it means
Most action cameras, phones and drones use CMOS sensors that do not capture the whole frame at once. They read it row by row from top to bottom, which takes a few milliseconds. If the camera or the subject moves during that readout, the top of the frame is recorded at a slightly different moment than the bottom.
The symptoms have names. Skew makes vertical lines lean during fast pans. Jello is a rubbery wobble caused by high-frequency vibration, typical of engines and the props of an FPV drone. Partial exposure shows up as bright bands from flashes or strobes. A global shutter, which captures everything at once, avoids all of it but is still rare in consumer cameras.
How it works in practice
On a motocross bike, engine vibration travels straight into a handlebar mount and the footage wobbles. Helmet or chest mounts, rubber dampers and properly tightened screws reduce it a lot. FPV pilots balance their props and soft-mount the camera for the same reason.
Electronic stabilization such as GoPro HyperSmooth or DJI RockSteady corrects much of the visible jello, because it uses gyro data to adjust different parts of the frame. Desktop tools like Gyroflow can apply similar correction in post when the camera recorded gyro data. Newer sensors with faster readout also show less skew.
What to watch out for
Turning stabilization off for a raw look often brings the jello back hard, especially on high-vibration mounts. If you plan to stabilize in post instead, confirm the camera actually records the motion data you need before the ride, not after.
Very fast shutter speeds make jello more noticeable, because every frame is crisp, while a little motion blur helps hide it. Under LED or fluorescent lights, rolling shutter can also add moving dark bands; matching the shutter speed to the mains frequency helps. Severe jello never disappears completely in editing, so prevention at the mount is the real fix.
How RawClip handles it
RawClip does not fix rolling shutter or stabilize footage, so deal with jello in the camera or before upload, for example with in-camera stabilization or Gyroflow. The AI then picks peak action across all your motocross or riding clips and cuts it into one highlight synced to music.