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Final Cut Pro 10.8.1 - problem with HDR videos since upgrading to MacOS Sequoia

Hi everyone, since I upgraded to Sequoia, HDR videos shot on an iPhone 14 Pro Max appear too dark in FCPX. Even when I open previous (finished) projects that looked fine under the previous version of MacOS, it does not show correctly.


After I treated my project as best as I could (but really not to my standards), if I export it to Compressor it then appears completely overexposed.


My screen is HDR and I enabled HDR in MacOS' setting. My Mac is a Min M2 Pro.


Anyone else encountered this problem ?

Mac mini, macOS 15.0

Posted on Sep 21, 2024 12:47 PM

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Question marked as Top-ranking reply

Posted on Jan 10, 2025 7:42 AM

AlainBE, thank you, PF_Productions, IAmSkipperMark, Tom, Clint, and Luis *very* much for all your help on this. Re: why it's not sorted out: I don't work for Apple, but I have extensive experience in software testing, development, and escalation support, and I can explain how the system works.


  • Usually, nothing will get fixed solely by people talking about it on a forum. From a user standpoint, it feels like you've "reported" it, especially if details are given, but that will not normally result in Apple product support or engineering taking action. With some products, such as DaVinci Resolve, actual developers monitor the forums, but that is rare. There is also a valid argument it's not the best use of a developer's time.
  • Posting info on a forum is useful, and the more detail, the better. In this case, several users have collectively posted enough information to broadly understand the overall problem parameters. But took a while.
  • There have been numerous situations where users refuse to provide the requested info, such as an EtreCheck report or an error log. This can greatly delay problem resolution.
  • For complex hardware/software issues like this case, posting information on the Apple Product Feedback site is OK but will often not produce the desired results. That site allows just 800 characters max input (including spaces) and no ability to attach files, error logs, links, etc. It is simply not designed for that purpose.
  • There is an Apple Feedback Assistant app, but it requires a developer account and is generally oriented toward app developers, not end users, and not even sophisticated IT users.
  • The best approach for most users is to collect as much info as possible and then contact Apple Support. If the case is escalated, this can include ongoing two-way email discussions whereby you report new findings. I believe this particular case is in that state, and IAmSkippermark is driving this (thanks!)
  • If you are an experienced software developer or have done similar work, you can get an Apple Developer account and report the problem, including attachments, logs, and files needed to reproduce the issue. However, this can require lots of work if done properly. When bugs are filed this way and followed up by contacting product support, Apple has been very responsive. See attached for an example of one I filed.


However, there is a good argument that customers should not have to spend hours or days researching a bug. OTOH, those customers may spend hours or days discussing the bug on a forum, so time is being spent anyway. There is no simple solution for this, but it's important for everyone to understand what is required to get a bug fixed.


The fastest way to get a bug fixed is by achieving a specific (ideally portable) reproducible scenario and reporting it to Apple Support by opening a case. The scenario allows engineering to reproduce the problem under a debugger and quickly fix it. It also allows later testing of that scenario to ensure it stays fixed in a new software version.


But it can take lots of time and work to achieve that well-documented, portable replication scenario. When working on critical problems that I or others encountered, I've heard people say "You're doing Apple's work for them." That betrays a lack of understanding about how the system works and how serious some problems are. If not for these efforts, some problems would not be fixed in an expedited time frame, and the cost to some end users could be significant.


Errorlogs and crash logs are useful, but those by themselves may not enable fixing a bug. The underlying technical factors are too complex to explain in this post, but if anyone is interested, I can elaborate in another thread.


Incorporating even a single fix to a complex product requires a full battery of regression tests, stress tests, functional tests, performance tests, localization tests, and security tests, individually repeated on a complex matrix of platforms and configurations. If the fix involves interactions between FCP and MacOS code, it might require a MacOS update, and those have their own schedule. The fastest I've seen Apple implement an FCP fix was about three weeks from the initial report, and that was a highly urgent matter where the release contained only that one fix.

97 replies

Oct 3, 2024 6:57 AM in response to Clint Gryke

Hi Clint. I typically edit and export in HLG but switching to PQ partially fixes the issue. The clips display properly in the viewer when I hover over them in the timeline, but they display dark in the browser and viewer when I hover over them in the browser. This makes marking in/out points difficult because the viewer displays the clip at like 10 nits, but I can work with it.

Oct 3, 2024 7:10 AM in response to Clint Gryke

I know I'm super late to these posts, but the issue does seem to be related to how the Mac is communicating to external monitors. I replied to one of your other posts, and the issue occurs on my M1 desktop when tested on 4 different monitors connected directly to the HDMI port, but I couldn't duplicate the issue at an Apple Store using their demo Mac mini or Mac Studio hooked up to the Mac Studio monitor via USB-C at an apple store. They don't have the XDR on display, so I couldn't test that.


My M1 laptop displays correctly on the internal HDR display in all modes (HLG & PQ), but it acts the same as the desktop when hooked up via HDMI to any of the 4 monitors I tested with. Unfortunately, none of the monitors I tested support USB-C connections, so I couldn't test with different connections.

Oct 3, 2024 4:15 PM in response to AlainBE

Hi - I'm curious. Is the monitor you're using with the Mac mini M2 an Apple monitor? I'm asking because I went to an Apple Store and couldn't replicate the error on the demo Mac mini M2 or the Mac Studio Ultra they had on display. Both were connected to Apple Studio displays via Thunderbolt 4.


My thinking is the issue is happening to all non-Apple displays, no matter how they're hooked up, but if you have an Apple monitor, that theory is out the widow.


From what I've been seeing, people with Apple displays aren't having this issue. Another poster in this thread said they're not experiencing the issue with their XDR display and a MacPro.

Nov 14, 2024 8:10 AM in response to AlainBE

Tried to edit my post, but it wouldn't let me - I've spoken with tech support about this multiple times, but they don't have any updates. Last update I received was in mid-October saying they'd get back to me once they hear something from engineering. I reached out today for an update but haven't heard anything yet. It's been two months since Sequoia was release and the problem first appeared.

Nov 14, 2024 7:35 PM in response to joema

To keep things simple, I have been using HDR footage from the iPhone, but it does happen with all footage from any camera.


The issue isn’t with the exported projects. It’s a display issue inside the app, where the clips appear dark in the viewer. Exported projects display correctly, even if you can barely see them on the screen to edit them.


When working with an HLG project, hovering over a clip in the browser or the timeline, it appears dark in the viewer.


When working with a PQ project, the clips appear dark in the viewer when hovering over them in the browser, but they display correctly in the viewer once added to the timeline.


The issue appeared immediately after upgrading to Sequoia and opening a project that worked perfectly in Sonoma, and they continue to work correctly on non-Sequoia machines, even if the monitor is the same as the one on the Sequoia machine. That’s what makes me think it’s an OS issue and not an FCP issue.


I’m the opposite of you. I don’t have any monitors that support Thunderbolt/USB-C, but I went to an Apple Store and tested on the demo machines hooked up to a studio monitor, and didn’t have the issue.


At home I tested on several HDR monitors ranging from a low quality gaming monitor to an Atomos Shinobi 7-Inch 4K HDMI HDR monitor, an LG C3 and a borrowed Flanders Scientific XMP310, all hooked up via HDMI. All except the gaming monitor have been calibrated and are using the calibrated profiles. Normally the Flanders is used with an UltraStudio 4K Mini, but for the sake of testing I hooked it up directly to the Mac’s HDMI.


I hope I explained this OK. It’s kind of hard to write it out to be easily understandable. When I called Apple support, they didn’t even know about HDR footage and kept calling it HGL instead of HLG, and the support rep said I was teaching them things they didn’t know about.

Nov 14, 2024 9:15 PM in response to IAmSkippermark

If you copy the Rec.2020 HLG video from the iPhone to your Mac, does it have tags 9-18-9 as shown by doing CMD+I in Quicktime Player and examining Video Details?


If it has those tags, does it play as expected in Quicktime Player? If not, this problem has nothing to do with FCP.


In MacOS System Settings>Displays, what color profile is selected for the HDR monitor?

Nov 15, 2024 4:09 AM in response to joema

Thanks for the detailed response, but what people aren’t understanding is 1) the HDMI port on the MacBook Pro DOES put out HDR for everything BUT FROM FCPX! It is HDR with the desktop image I put on it etc. It is SDR out of FCP since Sequoia. And 2) it worked flawlessly before Sequoia!


I’m talking about hooking an external monitor to the built in HDMI port of the laptop, and in FCP, you use that monitor as an external program feed. If you have a laptop, try it out! The desktop image you use for that screen and anything you drag to it is HDR, once in FCP it will be dull and not HDR while the laptop screen shows as HDR! Doesn’t matter if it’s iPhone HDR, or shot on a professional camera in Rec2020. The monitor will only show everything in SDR, and yes, all my FCP settings should send out HDR, the projects did before Sequoia.


It used to work perfectly and Sonoma broke it. Neither FCP 11 or any Sequoia updates have fixed it.


Nov 15, 2024 7:07 AM in response to joema

@joema - You're correct - the color points are 9-18-9, primaries BT.2020 and color transfer BT.2100 (HLG).


The clips display correctly everywhere except in FCP. No issues in Preview, QuickTime, Resolve Studio or any other programs. It's only in the viewer in FCP.


The color profiles have custom names because the monitors have been calibrated, but for HLG testing, I'm using Video Range 64-940, Gamut 2020, EOTF HLG and Luminance 1000. For PQ,Full Range 0-1023, Gamut 2020 (but have tested with P3-D65), EOTF PQ and Luminance 1000.


I'm configuring the settings in FCP's HDR Mastering Display Metadata section, correctly when working with a PQ project, but not HLG since they don't have/use embedded metadata.

Jan 9, 2025 6:43 AM in response to IAmSkippermark

Thats simply not accurate in my case. Its down to the HDMI output from my Macbook Pro in FCP ONLY! The HDMI output works in HDR just fine (I use an HDR screensaver and it perfectly HDR, the monitor even says so!). But when i try and output HDR to that same monitor from FCP, it is not in HDR. So it's not the "non-apple monitor" as that monitor works in HDR just fine as an extended display, even showing lightroom output in HDR. It's down to FCPX output via that HDMI.

Jan 9, 2025 8:18 AM in response to PF_Productions

@PF_Productions, IAmSkippermark and I above described your scenario. I said: "when the MacBook Pro detects the TV is connected via HDMI, it handshakes and this somehow restricts the FCP viewer from displaying HDR in the MacBook Pro XDR screen or the HDMI-connected TV. But it does not affect Quicktime Player display of HDR/HLG content on either MacBook display or the HDMI-connected TV."


We clearly stated it is FCP only. That is why IAmSkippermark questioned Apple: "does that mean that Final Cut Pro cannot be used with a third-party monitor?" Previously in this thread, he reported: "I use an external monitor and it gets HDR from the M1 from everything via the HDMI port EXCEPT FCPX!...the monitor I'm using will show HDR photos, etc, just nothing out of FCPX via the M1's HDMI port."


We first thought it was HDMI only because it tested OK with SDI monitors, but AlainBE said it happens in FCP on his LG 40WP95C-W Thunderbolt 4 monitor. That may be because there are few non-Apple Thunderbolt monitors and those Skipper and I tested were Apple.


IAmSkippermark: I don't want to spend hours (or days) debugging FCP with XCode, but if they are not being responsive, let me know, and I'll try to isolate what framework, class and method is responsible.

Jan 10, 2025 5:14 AM in response to IAmSkippermark

I am the one who started this post months ago, just after the release of MacOS Sequoia and I can't believe this has still not been sorted out. As I mentioned several times within this thread: this is NOT related to HDMI ! I an using an LG monitor connected via Thunderbolt 4 to a Mac mini M2 Pro.


In the mean time, I have reverted to shoot in SDR.

Jan 10, 2025 8:02 AM in response to joema

Thanks, joema. I'm not expecting much if any reply from Apple, as they kind of worded the email in a "case closed" scenario.


I somehow missed or misread AlainBE's post that said he was connected via Thunderbolt, so that shows it's clearly not a connection issue and truly could be "Third party monitors" as Apple support said.


It's been 2 days since I replied to Apple's email and no word yet, but I think the advisor is off on Thursday's and Fridays, so I may not get a reply for a couple more days.

Jan 10, 2025 8:18 AM in response to AlainBE

Hi AlainBE, I must have missed or misread your comment where you said you're connected to an LG monitor via Thunderbolt. The sorting of messages in these discussions is sometimes hard to follow, and I probably missed it.


Like you, my issue started when I updated to Sequoia. I worked on a project in the morning with Sonoma, and it worked great. Updated to Sequoia in the afternoon, and the issue immediately appeared.


I edit on a desktop, but I have a MacBook that still had Sonoma on it, so I installed FCP, and it worked great hooked up to the external monitor that wasn't working with the desktop. I then installed Sequoia on the MacBook, and the dark issue immediately appeared.


With you connecting to Thunderbolt and not HDMI confirms it's not an HDMI issue and possibly a "Third party monitor" issue as Apple support stated. If so, that's disheartening.


My workaround was switching to PQ projects instead of HLG because the clips in the timeline show correctly in the viewer window in this mode. They still show dark when I hover over them in the browser, but I can work around that.

Jan 10, 2025 8:45 AM in response to joema

I opened a case the first day the public (not beta) version of Sequoia was available and the problem appeared. Support has been very good, and I've been in frequent contact with an advisor who acts as the middleman between me and engineering.


They ask for something, and I send it to him, and he to them.


I've sent all kinds of system logs, the videos I'm working with, copies of the my projects and so on. When FCP 11 came out and with every update to MacOS, they've reached back out and had me try some things and then ask for more info.


We've done other test like create additional users, and I went so far as to do a complete system format with a fresh download of MacOS, with the only app installed being FCP.


Overall, support has been great, but ultimately, I don't know how big of priority it is. I imagine the number of us who edit in HDR is limited, but I do hope it gets fixed soon.

Final Cut Pro 10.8.1 - problem with HDR videos since upgrading to MacOS Sequoia

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