Dead pixel on a camera: how to find it before the edit

MultiSyncer Studio article · 2 min read

A dead or stuck sensor pixel shows in the frame as a dot that does not change from frame to frame. It is easy to miss in the viewfinder, and online tests check screens, not cameras. MultiSyncer Studio checks every file you shot after the card is copied and shows where the stuck pixel is in the frame.

Why a dead pixel is found late

Task	The usual check	MultiSyncer Studio
How it is checked	Online tests check screens, not cameras. To check a sensor you shoot a test and inspect the frames zoomed in.	The check runs by itself on every file shot, after the card is copied.
When it is found	Often already in the edit, when a reshoot is impossible.	On set, while you can still swap the camera or reshoot.
Where the pixel is	You search the whole frame by eye.	The “Show the stuck pixel” button shows where it is in the frame.
What else is in the frame	Other problems show up only on a full viewing.	It also finds black and frozen frames, a picture that breaks up, damaged frames, clipped highlights, a file that ends early; and sound problems.
How the editor finds out	From word of mouth on set, or on their own.	A marker on the timeline: a fail in red, undecided in yellow. And in the day report.

How to find a dead pixel in MultiSyncer Studio

1

Turn on the check

In the project setup, “Footage” section. The picture and sound check then runs by itself after every card is copied, as the next stage on the card: “Picture, sound”.

2

Copy the cards

The app looks through the picture of every file. You do not need to shoot a separate test: the footage itself is checked.

3

Open “Footage”

All footage in one table: ISO, shutter, iris, white balance and lens of every clip. The “Issues” view shows only what was found. The “Show the stuck pixel” button shows where it is in the frame.

4

Decide and pass it to the edit

Mark it “Fail” or “OK”. A fail reaches the editing app as a red marker, and the result of the check goes into the day report. If a pixel appeared on the sensor, you see it while still on set and can swap the camera before the next takes.

What the check looks for

Black framesFrozen picturePicture breaks upStuck pixelClipped highlightsClippingSound lost50 Hz humRadio mic dropoutsOpposite phase

More: footage qc in MultiSyncer Studio →

FAQ

How do I check a camera for dead pixels?

The footage check finds a stuck sensor pixel right in the clips you shot, and the “Show the stuck pixel” button shows where it is in the frame.

What else does the picture check find?

Black frames, a black head or tail of a clip, a frozen picture, a picture that breaks up, damaged frames, clipped highlights (a tenth of the frame or more is white with no detail), and a file that ends earlier than the length in its header.

How do the issues reach the editor?

As markers in the project for Premiere Pro, DaVinci Resolve and Final Cut Pro, and as locators in EDL: fails in red, undecided in yellow. The issues are also in the day report.

Does the app change my files?

Never. The original media is only read. Copies, proxies, sequences, corrected sound and reports are created as separate files.

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