How Video Stabilizer Works
Browser-based motion analysis and trajectory smoothing — reduce camera shake and handheld jitter without any app install.
Try it free →Step-by-step process
- 1
Frame collection
All frames are extracted to offscreen canvases in a first pass. No encoding happens yet — this pass captures the complete frame sequence for motion analysis.
- 2
Motion estimation and smoothing
Multi-scale tiled tracking estimates robust translation and small rotation while rejecting low-texture tiles and moving foreground subjects. Scene cuts reset the trajectory, and low-confidence frames pass through safely.
- 3
Compensated encode
Each frame is re-rendered against a strength-sensitive smoothed path. Adaptive crop is capped at 10% per edge, output frames are checked for blank video, and the result is finalized as seekable H.264/AAC MP4 with the original audio.
Frequently asked questions
Does stabilization handle rotation, not just translation?
Yes. The tiled estimator handles translation plus small rotational shake. Large perspective changes or motion that cannot be measured confidently pass through instead of receiving an unsafe correction.
Will stabilization crop my video?
Stabilization uses adaptive crop capped at 10% per edge. Corrections are clamped at that limit and the result diagnostics report when the cap was reached.
What about videos with very fast camera pans?
Fast intentional pans are classified as large motion, not camera shake, and are preserved (not smoothed out). The motion threshold distinguishes shake from intentional movement.