PortalSpinner | MP4-to-Portal Site Builder

Upload

A packet is one zip: one .json + one .mp4 (and/or a frames/ folder of images). The JSON describes the clusters; PortalSpinner figures out the rest — packet spec. Files open locally in your browser; nothing is uploaded.

Drop a packet .zip here or click to browse

Or drop a raw .mp4 — PortalSpinner breaks it into frames and you draw all the masking yourself:

Drop an .mp4 here or click to browse

Available packets

Projects

A project is your working copy of a packet. Edits live on each page until you press Save; saves stay in this browser tab for this session. The exported package embeds your project file so you can continue later — you are responsible for keeping what you export.

No changes

Click to select · ✎ edit · ▲▼ reorder

exclude

Interactive test

Tests saved work only. Wheel-scroll like the real homepage; hover shows the portal; click follows the route.

Range Smoothed geometry Mobile width preview (390px)

Scroll feel

Max travel fps Target glide fps Wheel step (desktop) Wheel step (mobile) Max lead frames

Selected timeline

Drag thumbnails to reorder — the left panel follows.

Frame stride Keep every Nth frame. 1 = every frame (smoothest scroll, biggest download). 2 = half the frames and half the size; each wheel step covers twice the motion. WebP quality Image compression for the atlas sheets (40–95). 84 matches the released site. Lower = smaller download, softer image. Render scale Downscales every frame and all click geometry together. Big data saving for mobile-first releases; the site stretches it back to screen size (slightly softer). Export name Optional name used in the zip filename. Only include portals that have a link Skips gates without an href so visitors never click a dead portal.

Portal links

Each portal is tagged by its text overlay (set on the Overlay page). Give each tag the page it should open.