Fast-cut single frames "burn"/flash on playback and export — Apple Silicon only (M-series), not on Intel Mac, Windows, or Linux

Question

Fast-cut single frames "burn"/flash on playback and export — Apple Silicon only (M-series), not on Intel Mac, Windows, or Linux

Issue:

I have a video trailer with a section containing very fast cuts (single-frame duration cuts). This portion appears "burnt"/flashed/over-bright only during playback and only on Apple Silicon (M-series) Macs. The same single frame, when paused/held, displays correctly with no burn.

Where it happens:

M-series MacBook Pro (built-in display)
Mac Studio (M-series) with external display
Confirmed in DaVinci Resolve playback, in the exported file played via QuickTime, and even via OneDrive's web/desktop viewer

Where it does NOT happen:

Same exported file on an Intel iMac — looks correct
Same file on Windows — looks correct
Same file on Linux — looks correct
Same file viewed on mobile (via OneDrive) — looks correct

What I've ruled out:

Not an export/encoding issue — file plays back correctly on every non-Apple-Silicon platform
Not incorrect HDR metadata — confirmed via ffprobe that color_primaries/color_transfer/color_space are all standard Rec.709 (SDR), not HDR/PQ/2020
Not a single-app bug — happens consistently across DaVinci Resolve, QuickTime, and OneDrive on the same M-series hardware
Not a mini-LED backlight/local-dimming artifact — happens on Mac Studio + external display too, which has no built-in backlight zones, so it's not panel-specific

What this points to:

Since the artifact is consistent across different playback apps but only on Apple Silicon (both built-in and external displays), it looks like something in macOS's Apple Silicon display/EDR compositing pipeline is momentarily misreading or over-boosting a single fast-cut frame — possibly related to per-frame tone-mapping/EDR handling that Intel Macs don't perform the same way.

Question:

Has anyone else run into single-frame brightness "burn"/flash artifacts specifically on M-series Macs during fast-cut video playback? Is there a known display/EDR setting (Reference Mode, True Tone, automatic brightness, etc.) that affects this, or is this a known Apple Silicon media pipeline bug?

MacBook Pro 14″, macOS 26.6

Posted on Sep 15, 2026 1:19 AM

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Answer 1

fox_m

Level 6

13,706 points

Sep 15, 2026 2:33 PM in response to franklin_colorist

This doesn't look like a problem that can be adequately addressed here. This is a user forum and if Motion's (or its output's) interaction with the Mac's firmware/hardware is actually the problem, then the programmers need to be made aware of it. [Go to the Motion menu and Provide Motion Feedback.]

Some more useful information you might consider including:

How many single frame images are you placing together to be played sequentially? Is there a point at which the burn/flash "kicks in" if reducing the number?

What happens if instead of one frame images, you set the timing to 2 frames, and then maybe 3 frames. Does the playback become more normal?

What frame rate are you using? Is it Fractional (23.98, 29.97 or 59.94)? If so, what happens if you set the frame rate to a whole integer value (24, 30, 60)? And also maybe using a slower frame rate if using 60 or higher?

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Answer 2

Sep 16, 2026 6:11 AM in response to franklin_colorist

In addition to Fox's insightful comments, and since you posted in the Motion forum:

Are you using Apple Motion to do your editing?

If not, then what software you using? Final Cut Pro? iMovie? Other?

If yes, then my next question is: how are you creating these one-frame cuts? Are you opening an "Image Sequence", or handling the images separately?

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