Why Blob Tracking for Video Editors Works Here
Render the finished effect
Record exports the composited result — footage, boxes, lines and labels — as MP4 (H.264) or WebM, ready to place on your timeline like any other clip.
PNG sequence for frame-exact work
Export every frame as a PNG inside a ZIP. After Effects, Premiere Pro and DaVinci Resolve can all import numbered image sequences.
CSV tracking data
Download per-frame blob data as CSV — frame, time, blob ID, label, center X/Y, width, height, speed and area — for scripts, expressions or data-driven graphics.
Trim and grade before export
Trim the clip, add a Cinematic LUT and pick the tracking style first, so the render drops straight into the cut.
CapCut and phone editors too
The MP4 export imports into CapCut, iMovie or any mobile editor — record the effect on your phone and edit it there.
No plugin, no license
Everything runs in a browser tab, free, and your footage is never uploaded.
Frequently Asked Questions
Is there a free blob tracking plugin for After Effects?
You don't need one for the look: create the blob tracking effect here for free, export it as MP4 or a PNG sequence, and import that into After Effects.
How do I use the blob tracking effect in DaVinci Resolve?
Load your clip, pick a tracking style, then Record to MP4 or export a PNG sequence. Import the result into Resolve's media pool and place it on the timeline.
Can I export only the tracking overlay with a transparent background?
Not currently — exports include the video underneath. If you want to rebuild the overlay yourself, use the CSV tracking data.
What is in the CSV export?
One row per tracked blob per frame: Frame, TimeSec, BlobID, Label, CenterX, CenterY, Width, Height, SpeedPxSec and AreaPx2.
Is it free?
Yes — free, no watermark, no signup.
