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They work fine in FCP 10.8.1, so I had to revert to it for now, as I am using this kind of HEVC slomo files in several projects. When you create optimized media, they are displayed correctly, but I don't want to create these giant files if I don't have to...
Anyone else having encountered this bug, or found a workaround without creating optimized media?
I hope this will be fixed in the next update!
MacBook Pro 16″, macOS 15.1
I was able to get the file.
The problem may be associated to the fact that this is a high frame rate file (recorded at 100fps).
Quicklook shows the file without issue. Quicktime Player plays it first at normal speed, then as slow motion, then again at normal speed.
In FCP, the clip thumbnail appears, and I could even skim over it, and see it there, but the viewer remained black. It seemed like the clip caused some weird effect, since then everything in the viewer was black.
I deleted preferences, and now the clip does play (as does everything else).
I downloaded your GH6 clip which had the below characteristics. It worked on the five Macs I tested, all but one was running Sequoia 15.1 and FCP 11.0. I imported it via drag/drop from Finder to the FCP event. The GH6 clip was on the internal drive of each Mac. I tested playback in both Event Browser and on 100 fps and 50 fps timelines, using 1x speed and 1/4 speed, plus fast forward and reverse. I did not use optimized media for any of them. It worked OK in all cases.
Edit/add: All of the below machines were on Pro Video Formats 2.3.2. This is indicated in System Information>General>About>System Report>Software>Installations, scroll down to Pro Video Formats.
This is normally installed as part of MacOS updates, but it's a secondary update where you must click on the blue link in System Settings>General>Software Updates.
M1 Ultra Mac Studio, Sequoia 15.1, FCP 11.0: OK
M1 Max MacBook Pro 16, Sequoia 15.1, FCP 11.0: OK
M4 Pro Mac Mini, Sequoia 15.1, FCP 11.0: OK
2019 i9 MacBook Pro 16, Sequoia 15.1, FCP 10.7.1 and 11.0: both OK
2017 i7 iMac 27, Ventura 13.7.1, FCP 10.8.1: OK (can't be upgraded to Sonoma or FCP 11).
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L6.1@High
Codec ID : hvc1
Codec ID/Info : High Efficiency Video Coding
Duration : 8 s 160 ms
Bit rate : 288 Mb/s
Width : 3 840 pixels
Height 2 160 pixels
Display aspect ratio : 16:9
Frame rate • mode : Constant
Frame rate : 100.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.347
Stream size 280 MiB (98%)
@iHeimo, I may have briefly seen a version of this on my M1 Ultra Mac Studio and Apple Studio monitor, but not my M1 Max MBP, with or without the LG Thunderbolt 5k monitor connected. In my case, it manifested as a rapid blinking of the FCP viewer when your UHD 4k 100 fps HEVC GH6 clip is loaded and if I sweep my mouse across the viewer. However, it went away, and I now can't make it happen.
Can you try to reproduce it with your BenQ monitor disconnected? Also, please give us the complete specs and model number on that monitor, and how it's connected to your M1 Max MacBook Pro. Is it by direct HDMI cable or does it go through a hub, dock or other hardware?
I suspect this is a timing-sensitive issue and only appears under certain hardware and monitor configurations. This must be better understood before filing a formal bug, because it only happens under certain configurations that we don't yet understand.
Thanks joema, Tom and Luis for your time and effort in evaluating this problem!
I gave it another shot, this time carefully recreating the settings after installing FCP 11, but that didn't help.
I found out though, when selecting the clip in the library, a monitor frequency warning shows up, so that's probably where this bug is hiding! This applies to both my external BENQ and to my MacBook's internal display. As I said, when I create optimized media for the clip, all is back to normal (but with huge additional files I don't want).
I also tried to create a new library and project with just this clip, and here it displays just fine, but also shows the warning and force creates a hidden thumbnail file with 1.3 GB (!!!) in the background! Maybe that’s what happened in your trials also, without you noticing it?
So unless someone finds another solution, I'll have to revert to FCP 10.8.1, until this bug is ironed out.
I assume you mean this doesn’t work in FCP 11.
Do the files play correctly in the QT player? Could you share a clip using Dropbox or WeTransfer or similar? Post the click here which will appear in notifications.
Lucky you, Tom! I have an M1 Max MBP with 64GB RAM, and this file (and all other GH6 100fps files) shows up black in FCP 11 in Sequoia, unless I create an enormous optimized file. Please Apple, fix this bug a.s.a.p., as I don't want to be stuck with FCP 10.8.1 forever!
Lucky you, Tom! I have an M1 Max MBP with 64GB RAM, and FCP 11 in Sequoia shows a black frame for this file, unless I create an enormous optimized file (same for all Lumix GH6 100fps HEVC files). Apple, please fix this bug, as I don't want to be stuck with FCP 10.8.1 forever.
@iHeimo, Luis reported this problem was fixed when he reset FCP preferences (aka settings). Please try that. While holding down OPT and CMD keys, launch FCP. Then see if it works.
Edit: I see you already tried this. In my tests I have background rendering disabled. I also get the "video frame rate" warning, but I currently don't think it's related to the problem.
In FCP>Settings>Playback, please turn off Background Rendering, also turn off Create optimized media for multicam clips. In FCP>Settings>Import>Files, please set that to "Leave files in place".
After doing this select the FCP library in the left sidebar, and do File>Delete Generated Library Files>Delete Render Files>All, and also delete optimized media, proxy media and unused magnetic mask files.
Then see if it still happens.
Ok, I have a BENQ PD3220U, connected via Thunderbolt.
The project I created a couple of months ago containing these 100fps files works fine under Sequoia 15.1.1. and FCP 10.8.1—no warnings, no problems whatsoever.
When updating to FCP 11 (with deleting prefs, of course) the 100fps files go black, and there's the monitor/fps warning on the BenQ. With the MBP only, they are still going black, and they only can be resurrected by creating humungous optimized files. Reconnecting originals doesn't work ("not the same file type...")
When I create a new project in FCP 11 with the exact same files, all is working as intended (as long as automatic render is turned off, and the normal slomo 25% setting vs. Smooth is used—both would cause creation of huge cached files).
So it seems that FCP 11 doesn't update project files created in earlier versions with 100 fps footage correctly. You might be able to replicate that with libraries created in 10.8.1 containing the 100 fps files, and then updating them with FCP 11. It might even concern other high fps file types from Canikony etc. ;-)
I am curious what you find out...
Sort of correctly - they start at normal speed and turn to slomo display after a second. They work fine in VLC and IINA. And in FCP 10.8.1
[Edited by Moderator]
The switching to slomo after a second is the normal behavior in QuickTime for high frame rate media. I'm not seeing this in FCP 8.1 or 11 in either Sonoma or Sequoia.
However, I only get a black display in FCP 11 under Sequoia. Did you get the file I linked in my reply?
Thanks for your input so far.
[Edited by Moderator]
The file plays correctly for me in FCP 11 in Sequoia on an Intel MBP.
Do those files work correctly in 10.8.1 *on the same Mac*?
Yes, they do, as noted in my original post. That's why I reverted back to FCP 10.8.1 for now. Please note: Tom has an Intel Mac, I have an M1 Max.
FCP 11 displays Lumix GH6 100fps files in black
