How to add shake
1. Drop a short video you already have. A photo or an audio file is refused here. 2. Leave light, or pick medium or strong. 3. Press “Apply shake” and download the MP4.
GustKit rotates each frame a little, then crops a window that jitters and scales it back to the original width and height. Strong tilts more and moves the window farther than light. When the file has a soundtrack, that track stays. A silent clip still shakes.
A wobble, not a steady shot
Deshake video tries to hold the camera still. This page does the opposite: it adds a small crop and rotate jitter. It does not zoom the center and it does not flip the clip. The download is always MP4.
The clip stays in this tab
FFmpeg runs in this browser. GustKit does not fetch video from a link. Close the tab and the file is gone. Clips up to the limit shown next to the button.
How to check the shake
1. Play the download next to the original. 2. A mark that stayed still should wobble. Strong should move it more than light. 3. If the download is not MP4, or the frame size changed, you opened a different page.
Deshake video tries to hold the camera still. This page runs FFmpeg crop and rotate to add a wobble and saves MP4. Nothing is uploaded.