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Example of the issue:
https://www.youtube.com/watch?v=vAkYQ2g7qVM
So what's happening is the Lumetri color on this clip appears to be flashing on and off. I see it in my timeline and in the export. There are no other effects applied to my clips. It's happening to many clips, but not all. And not to every instance of a source clips (IE: sometimes I cut back to this single interview clip at different times and the flickering is not present). This is week 2 with this issue. What I have tried so far:
I have updated premiere
updated video drivers twice
exported from 2 different similar PC machines
purged my cache and render files
exported in premiere and in media encoder
copied everything into a new sequence in a new project
Fianly, the most success I've had so far is disabling GPU acceleration when exporting in Media Encoder. It trippled my render time but I only got three flashes in the whole 3min video. But that's still an unacceptable problem. Thoughts?
Project Specs:
3840 x 2160
29.97 fps
48000 Hz - Stereo
Color Space: Rec. 709
Footage is a mixutre of MP4 and MXF
Computer Specs:
Processor Intel(R) Core(TM) i9-9920X CPU @ 3.50GHz 3.50 GHz
Installed RAM 64.0 GB (63.7 GB usable)
GPU NVIDIA Quadro P4000
GPU Driver: 516.59
System type 64-bit operating system, x64-based processor
Also, another thing that seemed to work with some troublesome mxf files was to change the file name extension from .mxf to .mpg. I'd duplicate the file first... This was Ann Bens suggestion. Credit where credit is due...
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Additional Info:
Here is an exmple of the full video:
You'll see the glitch is periodic. This was done in Media Encoder with software rendering only (no GPU accelleration). Every time I try a new fix the location of the glitch in the timeline changes. The only thing that seems constant is that it looks like only my MXF clips are effected. While my MP4s are behaving. And no its not feasble to transcode all my MXFs just to get this project to work.
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Hi Benjamin,
Sorry about that. My only suggestion is to transcode the .mxf files until the issue has been worked out. I see others on these forums having problems with certain codecs and .mxf, so I suspect a bug is afoot. I would roll back to an earlier version or target those files for transcoding. I'll look into this issue soon after I return to my desk.
Thanks,
Kevin
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Unfortunatly the problem persists. I have been able to confirm that the culprit is any footage in .mxf. It happens in all my projects. Transcoding all my MXF files to ProRes is not a viable solution as I have 6 years and growing worth of archival footage shot in MXF that I regularly use in different projects. Exporting the project sequence to ProRes and then transcoding that to an mp4 partially works, although sometimes that process Premiere will just completely ignore lumetri on random clips. This is also not an acceptable solution because beyond not working 100% it doesnt fix the fact that these clips are flashing in my timeline while editing them which makes editing a nightmare.
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I am having the exact same issue, started a couple weeks ago while editing, didn't think much of it till now, major project, and it moves from 1 clip to another after I thought I fixed it. mfx files, seems to be older ones, maybe a 1-2 years older than some of the other ones in timeline, starts in a file with a LUT then migrated to other files w/o luts.
I finally copied the project then opened it with my new powerbook ran it and it was fine, gritting my theeth the whole time , but it worked. I am on an Imac 4 GHz Quad-Core Intel Core i7 16 GB 1600 MHz DDR3 AMD Radeon R9 M295X 4 GB ugraded to big sur as well
Took the same project back to imac and once again flashing. Whats the fix???
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Just updated Media Encoder to 22.6 played the sequence once and it was clear. Lets see if that's the fix
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Nope sorry spoke too soon
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I'm also running into this except with MOV files. Is there a solution yet?
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saw this intermittent problem working on a large 4k documentary project.. much of the material was .mxf. Try this. select a clip in the bin/project. right click and choose modify: interpret footage. Go to the bottom of the modify window and see if the media color space is anything but rec709. If it is, enable color space override and choose rec709. This solved my problem and also solved the problem on the proxies from this material without needing to modify the proxy files.
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Also, another thing that seemed to work with some troublesome mxf files was to change the file name extension from .mxf to .mpg. I'd duplicate the file first... This was Ann Bens suggestion. Credit where credit is due...
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I tried both, and it seems to be fixed. Thanks for the help!
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and thanks for the update. Not enough people do that...