Premiere Pro 25.1 Bug: Vertical Pixel Aspect Ratio is reduced by 1%

Yes, I am on a Macbook Pro M2 Max. It is happening to 1080p footage shot on Sony FX3 and A7R5 in h.264. 1080p footage from Iphone and mp4 stock footage is working fine. When I open up older projects with 25.2 that used to work with older projects same thing is happing. Somehow the new versions misinterpret Sony's metadata on pixel aspect ratio. In media file properties it's showing a PAR of 1.0075 for those files.

@Daniel302953428efj,

Mac or PC?

I reported a simple HD test earlier when I was on 25.0 (Win10), and it scaled correctly.

I am now Win 10 25.2.1, and I tested a UHD sequence (3840x2106) with a UHD clip and HD. When I add the HD clip, in comes in scaled to 200% and fits perfectly.

My questions are whether this is a Mac only issue? Is this an issue for old projects?

Stan

I'm currently on 25.2 and still having the exact same problem as described above.

Is anyone still having this issue? I downgraded from 25.1 to 25.0 which solved my issues but am hesitant to update again.

I believe I am having a similar issue.

https://community.adobe.com/t5/premiere-pro-bugs/1080p-video-in-4k-sequence-not-scaling-correctly/idi-p/15040279#M42550

I’m encountering an issue with Premiere Pro 25.1 and Media Encoder 25.1 that wasn’t present in 25.0. I’m working with a 2160p sequence that includes a mix of 4K and 1080p media. After upgrading, I noticed that 1080p clips in the sequence now display a black bar at the top of the file during playback in the Program Monitor and in the final exported file. The export settings are H.264/ProRes 422.

To troubleshoot, I downgraded both Premiere Pro and Media Encoder to 25.0, and the issue disappeared with the same exact project file. This leads me to believe the problem might be related to changes in the H.264 engine introduced in the new update 25.1. My system details are as follows: macOS 15.2, MacBook Pro 14” with an M1 Max chip.

The issue seems isolated to version 25.1, as I’ve successfully exported files in 25.0 using the same project and settings. Let me know if additional details or steps to reproduce would help.

Hi @Glass Amoeba 

Thanks for submitting your bug report. We need a few more details to try to help with the issue. What type of file and footage are you using to drop into the 1920x1080 sequnce? Is it happening to all file formats or just a certain camera?

Thanks,

Ian

Fits perfectly in 25.1 on windows.

Maybe a mac thing?

Trash preferences and/or media cache.

Check the scaling

What is the origin of the file?

@Glass Amoeba,

I have not updated to 25.1.0 due to an ongoing project, but I'm curious, so tested in 25.0.0 and Beta 25.2.0.44.

I used a clip that is 1920x1080 (checked in MediaInfo) and created a sequence by dragging to the new icon.

I also created a red color matte as 1920x1080 and placed it on the track below the clip.

I set the Program Monitor to 50% (so I can clearly see the edges), and I see no color showing. If I reduce the clip scaling to 99%, the red shows. I get the same results in both versions.

Let's see what someone with 25.1.0 sees.

Stan