Interpretation error in the pixel ratio of a MOV 100FPS file in Adobe Premiere Pro 25.1

[stefanusdian]

Hi, I have an issue in Premiere Pro 25.1. The Pixel Aspect Ratio of a Lumix 100FPS MOV 10-bit 4:2:2 file is different from Premiere Pro version 25.0. 

I can fix it by manually inputting the ratio through Project Panel, Right-click the file, Modify, Interpret Footage. However, it sometimes still leaves a small space on the left and right sides of the screen. This error also prevents Warp Stabilizer from being used.

Hopefully, this issue can be resolved in the next Premiere update.

[Sumeet Kumar Choubey]

Hi stefanusdian,

We're sorry to hear about this. If possible, could you please share a download link for the sample media with which you are experiencing this issue? It will help us to investigate the issue.

Thanks,

Sumeet

[Rach McIntire]

Hi @stefanusdian,

Thanks for filing your bug report. Although I'm glad you can make it work in the Modify menu, I'd love to look into this more.  If possible could you send us this file to test with?  

[stefanusdian]

If I use a different format, such as MP4, the aspect ratio is normal, and there are no issues.

Download Sample Media 

[stefanusdian]

Download Sample Here 

[Sumeet Kumar Choubey]

Thanks for the download links. Please allow us some time to get it checked. We will get back to you shortly.

-Sumeet

[stefanusdian]

Thank you!

[Sumeet Kumar Choubey]

Thanks for your patience! We’re able to reproduce this issue. It seems to be happening because of hardware accelerated decoding. Disabling Hardware accelerated decoding (under Preferences > Media) can reverse the change to Pixel Aspect Ratio, but it might reduce the playback performance. For the time being, we recommend manually interpreting the Pixel Aspect Ratio to 1.0. We will update this thread once the issue is sorted.

-Sumeet

[MediaNatives]

Shot an event using a Sony FX3 and an A7SIII. Both cameras set to HD 25fps, XAVC S-I HD. 

Editing on PP 25.2.3 (Build 4)

MacOS Monterey v12.6.7, Mac Studio 2022, Apple M1 Ultra

Timeline settings: 1920x1080, 25fps,    square pixels.

So far, nothing unusual, camera and edit settings used 100x before.

Applying warp stabilizer to clips from both cameras: "Warp stabilizer requires clip pixel aspect ratio to match sequence (fix by nesting.)

Huh?

Check settings. All good. Check clip settings. All good.

No obvious reason why I'm getting the red band warning. So go back to the clips, right click on one and select New sequence from clip. Apply Warp Stabilizer and it's fine, blue band, does its thing, clip stabilized.

Go into sequence settings and the pixel aspect ratio is "unknown PAR (135/134)"

And the aspect ratio, instead of 16:9 is 120:67

Can anyone explain? Have never seen this before despite hundreds of edits using these cameras and settings. My suspicion is it's not the camera, it's Premiere.

(And I know I can fix it by nesting, but I'd rather just fix the bug!!)

TIA

TIA  

[jamieclarke]

Hi @MediaNatives - Can you right click on your media file and select "Media File Properties" and then post a screenshot.

[MediaNatives]

Here you go

[jamieclarke]

Hi @MediaNatives - This is indeed a bug I will merge your post with the Primary thread so you are notified when there is a fix.  You can see on your Pixel Aspect ratio it is set to 1.0075 and should be 1.000.  As a workaround you can right click on your media file and select Modify > Interpret Footage and change the Pixel Aspect Ratio: Square Pixels 1.0

[MediaNatives]

Ah, that's great, thanks!

[STFNS]

I found a strange issue with Lumix files in the MOV format. In older versions of Premiere, the aspect ratio was listed as Pixel Aspect Ratio: 1.0; however, in the latest version, it displays Pixel Aspect Ratio: 1.0075.

This problem can be fixed by disabling hardware acceleration or manually adjusting the aspect ratio. It’s a simple workaround, but quite frustrating, especially because effects like Warp Stabilizer can’t be used, even after nesting the clip.

I'm using a MacBook Pro 2021 M1 Pro

Download File:
Preview File 

[MyerPj]

Hey @STFNS 

Thanks for the file. I gave it a try in Beta 25.4 b25 and it looks correct.

I also tried it in 25.2.3 the released version and all was well.

Here's the Media File Properties

File Path: C:\T\PS929422.MOV
Type: MPEG Movie
File Size: 82.67 MB
Image Size: 1920 x 1080
Frame Rate: 100.00
Source Audio Format: 96000 Hz - 24-bit - Stereo
Project Audio Format: 96000 Hz - 32 bit floating point - Stereo
Total Duration: 00:00:03:84
Pixel Aspect Ratio: 1.0
Alpha: None
Color Space: Rec. 709
Color Space Override: Off
Input LUT: None
Video Codec Type: MP4/MOV H.264 10 bit 4:2:2

[STFNS]

Try on Mac

[MyerPj]

Ah...er... what, do you think I don't believe you? 🙂

OK, so, that's a clue to you and or the developers that it's may be a mac issue.

Also, the current version is 25.2.3, and we're in the 25.4s in the beta, is something preventing you from upgrading to that, to try it?

[STFNS]

I’ve already upgraded to the latest version of Premiere, but the result is still the same.

[jamieclarke]

Hi @STFNS - This is a known bug I will merge your post with the Primary thread so you are notified when there is a fix.  As a workaround you can right click on your media file and select Modify > Interpret Footage and change the Pixel Aspect Ratio: Square Pixels 1.0

[mayjain]

Hi All,

Thanks for highlighting this issue. We have fixed this in the latest beta builds (Premiere Pro 25.4.74 and newer).
If possible, please install the latest beta build and let us know how it goes there.

Thanks,
Mayjain