Last Updated 2 days ago
Filmmaking Dictionary: Letter Q / Quad Split
Definition
A quad split is a monitor layout that shows four video sources at once, normally in a two-by-two grid. On a film set, it lets the director, script supervisor or video team compare several camera views without switching the whole screen between them. A multiview processor, video switcher, monitor or software application can generate the layout.
The term describes the viewing arrangement. It does not mean that the cameras record a four-panel image, share exposure settings or are automatically synchronised. The individual camera recordings can remain completely separate.
How It Is Used on Set
On a multi-camera shoot, a quad split might display A camera’s wide shot, B camera’s close-up, a third camera’s reverse angle and a playback feed. That makes it easier to see whether cameras are ready and whether one operator has entered another camera’s frame.
Identify the windows clearly. A camera letter is more useful than an input number that nobody on set recognises. If one window shows playback and the others are live, label that difference too; otherwise an old take can be mistaken for a current feed.
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Resolution and Monitoring Limits
The number of display pixels available to each image depends on the output raster and layout. In a simple, evenly divided 3840 × 2160 quad display, each window can occupy 1920 × 1080 pixels. In a 1920 × 1080 output, each occupies only 960 × 540 before allowing for borders or labels.
Small images are useful for watching coverage, but fine focus, noise and subtle image defects are harder to judge. A focus puller or DIT may need a dedicated full-screen feed, appropriate monitoring tools or a pixel-for-pixel view. Enlarging a low-resolution feed does not restore detail that was never transmitted.
Setting Up a Useful Quad View
- Label every window with the correct camera or source.
- Confirm the processor accepts the incoming resolutions and frame rates; supported combinations vary.
- Check whether a viewing LUT, frame lines or camera overlays are present on each feed.
- Choose which source supplies the monitored audio instead of assuming all four are mixed together.
- Keep the multiview output separate from the intended recording and delivery outputs.
Processing and wireless transmission can introduce delay. A quad view is therefore not proof that all sources have identical latency or that picture and sound are in sync.
Practical Example
For a three-camera interview, a director watches the wide shot and both close-ups together. When a close-up needs a focus check, the appropriate camera is viewed full screen. The quad split helps coordinate coverage; the individual feeds still need to be checked at a suitable size.
Learn how those responsibilities fit together in the camera department guide.
Related Terms
Browse terms beginning with Q or return to the filmmaking dictionary.