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Participating Frequently
March 11, 2024
Question

Optical Flow Ghosting Bug in PPro but not AE

  • March 11, 2024
  • 12 replies
  • 1107 views

I am working with some Mavic 3 drone shots and I need to slow down the footage, however when I use Optical Flow for the frame interpolation, I get a flickery - more like Frame Blending result in the preview window as well as the export. When I do the same speed reduction with the same Optical Flow interpolation in After Effects, it smoothes wonderfully and as expected.

This was tested on both a Windows 11 PC and an M2 Max Macbook Pro, the preview and export results are the same on both machines. I have created sequences/comps directly from the clips themselves, and I double checked the export settings to be sure Optical Flow was selected as the frame interpolation option.

I am currently using Premiere Pro 23.5.0, and I have seen this same bug/ weird result in earlier versions of Premiere Pro as well. I am using After Effects 23.6.2 and all the Pixel Motion/Optical Flow slow motion renders out correctly.

I would prefer to not transcode footage between After Effects and Premiere Pro just because the Optical Flow in PPro isn't behaving. I have attached a comparison showing the buggy Premiere Pro Optical Flow interpolation vs the After Effects correct Optical Flow interpolation.

Has anyone else seen this? Would appreciate any pointers if there is a setting to fix it! Otherwise I'm happy to help clarify anything if this is a proper bug.

Thanks for your time! 

This topic has been closed for replies.

12 replies

AndrewTheGreat
Known Participant
July 10, 2024

Hi, @reuko Can you give me a link to your video to test it out? I tried to reproduce the issue in Pr 24.5 and Ae 24.5 with a stock footage and failed. I imported the file in Premiere Pro, slowed it down by 75% and then sent its copy to Ae via the Dynamic Link, then applied the interpolation in both the programms - same result in Premiere and Ae.

 

Stop trying to edit and EDIT!
Kevin J. Monahan Jr.
Community Manager
Community Manager
June 18, 2024

Hello @reuko,

Thanks for the message. It’s been a while since you filed this bug. Are you still having this issue? Let us know. I've asked a product team member to look at this issue.
 
Thanks,

Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
reukoAuthor
Participating Frequently
March 20, 2024

Hey! I was wondering if there was any updates or confirmation of this issue with the developers? This is a pretty serious blocker for my project at the moment and it would be helpful to know if this is being looked at.

Thanks!

Kevin J. Monahan Jr.
Community Manager
Community Manager
August 23, 2024

Hi @reuko,

We didn't hear back from you. Sorry for the lack of a response from our team. Let us know if you are still experiencing this issue. I'll move your thread into the "Discussions" forum while we await your response. Sorry for the hassle.

 

Thanks,
Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
reukoAuthor
Participating Frequently
March 11, 2024

I apprecaite the care and attention to this issue! If there was some way to use the After Effects version of Optical Flow in Premiere Pro, that would be a perfect fix for this.

Is it possible to track the status of this bug? This is a blocking bug for the project I'm working on so I'm happy to offer help with testing new beta versions once a fix has been pushed.

Thanks!

Kevin J. Monahan Jr.
Community Manager
Community Manager
March 11, 2024

OK, @reuko.

Sorry for the mix-up. You said, "I have seen this same bug/weird result in earlier versions of Premiere Pro as well." So, I thought you may have already filed a bug on the issue. It would be my mistake if that were not the case.

 

Thanks for confirming your observations and the difference between the fixed bug and your bug. The developers will appreciate that. I'll continue to advocate for a fix for this problem. Sorry for the frustration here.

 

Thanks,
Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
reukoAuthor
Participating Frequently
March 11, 2024

@Kevin-Monahan I'm sorry I'm not sure I understand. This is my first bug report on this issue, and the issue in the link is not the same problem because that is specific to the M1 Mac, and this issue is present on Windows as well as Mac. Also there is no visual example of the Optical Flow issue in that thread, so I cannot confirm it is the same.

Kevin J. Monahan Jr.
Community Manager
Community Manager
March 11, 2024
quote
I will look for your previous bug report and read it. Is it the same bug? Let me know. It would be great to combine these entries so that the team can be focused on the issue. If so, I will try to find your bug report and join it here. Please let me know. I appreciate your cooperation and help.

 

I looked for your previous bug report but could not locate it. Do you have a URL, please? That would be great.

 

Thank You,
Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
Kevin J. Monahan Jr.
Community Manager
Community Manager
March 11, 2024

Hi @reuko,

A bug in a previous version was fixed along these lines (23.2). Can you read the last report bug here to see if this might also be your issue? It's always possible that the bug might be recurring.

 

I will look for your previous bug report and read it. Is it the same bug? Let me know. It would be great to combine these entries so that the team can be focused on the issue. If so, I will try to find your bug report and join it here. Please let me know. I appreciate your cooperation and help. I would like to see a fix for this issue as soon as possible. Proper speed effects are critical to any video editor.

 

Thanks,
Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
reukoAuthor
Participating Frequently
March 11, 2024

Hi! @Kevin-Monahan  I'll gladly clarify that I initially reported this issue being present in Premiere Pro 2023.5, but have also tested this in the latest release Premiere Pro 2024.2.1 and the latest Beta Premiere Pro 2024.4 with the same issue. All versions of After Effects I have tried this with do not have this issue with Optical Flow / Pixel Motion.

Let me know if you need further clarification or details!

Kevin J. Monahan Jr.
Community Manager
Community Manager
March 11, 2024

Good day, @reuko,

I hope you had a good weekend. Thank you so much for providing the added info. That will be very helpful for the team to reproduce the issue.

 

In re-eading the original info more carefully, I was able to note that you are filing a bug on a previous version. Bugs from previous versions are not considered unless they persist in the current version. Is that the case? The developers would prefer that you test the issue with the most current version of the application and report back with the results. In the meantime, I'll check to see if the current version has the bug fix. I hope so! Thanks for your cooperation and patience.

 

Cheers,

Kevin

 

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio