Use animated motion graphics exported with an alpha channel for polished intros, lower thirds, frames, and transitions.
Alpha-aware compositing
Transparent overlays that stay transparent.
Use animated MOV or WebM graphics and PNG artwork as true layers over your source video. Polley Auto Overlay preserves the transparent regions, provides a live composition preview, and renders the result locally on Windows.
Add compact transparent animation assets while retaining the clear areas around the visible graphic.
Place logos, corner bugs, labels, borders, and other still artwork without adding a rectangular background.
Layer controls
Compose the frame instead of flattening the asset.
Position and scale
Move each layer and resize it independently for the source frame.
Opacity and fades
Balance visibility and soften how the layer enters or leaves.
Rotation and mirroring
Turn artwork or flip it horizontally and vertically per layer.
Layer order
Reorder stacked graphics to control which asset appears on top.
Timing blocks
Drag a block or its edges on the timeline to schedule each overlay.
Local preview
See the source and transparent layers together before export.
Why alpha support matters
A transparent overlay is designed to reveal the source footage everywhere the graphic has no visible pixels. If software ignores alpha information, the asset may appear inside an unwanted black or solid rectangle. Polley Auto Overlay is built for the intended layered result.
Practical check: preview the asset over both a bright and dark moment in the source. This reveals faint edges, unexpected matte colors, or readability issues before a long batch begins.
Where transparent layers help
- Animated channel branding and show opens
- Lower-third names and speaker labels
- Decorative frames for vertical social clips
- Sponsor graphics shown during a specific time range
- Reaction elements, pointers, callouts, and visual cues
- Consistent corner logos across recurring uploads
Several assets can be stacked in one project. Their placement, order, and timing remain independently adjustable, and the project can be saved for later use.