SpectraBridge documentation

Capturing a single window

Capturing a single window is the reason this app exists. Full-display capture sends every notification, every misplaced Finder window and every accidental Spotlight to the wall. Window capture sends the one thing you meant to send.

Choosing well

• Window — one document or view. Follows the window if it moves or resizes.
• Application — every window that app owns, composited. Useful when a tool opens auxiliary panels mid-show.
• Display — the whole screen. Use a second display the audience is meant to see, never your working screen.

Windows that come out black

Some applications mark their windows as protected — DRM video players and several conferencing tools do this. macOS refuses to hand those pixels to any capture API, including ours. There is no workaround and you should be suspicious of anything claiming otherwise.

Keeping it stable

Do not minimise the captured window. A minimised window stops producing frames, because macOS stops drawing it. Move it to another Space or another display instead — both keep drawing.

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