Applying a Noise Effect to Footage Crops the Clip

Forum|Forum|1 year ago
July 16, 2024
7 replies
1109 views

I'm working with some 1080p footage in a 1080p sequence and when I apply the Noise effect to the footage the left and right sides of the footage in the Program monitor suddenly disappear? If I remove the effect, they reappear again.

Effect off.

Effect on.

I've also noticed if I Scale the footage down using the mouse slider left/right, once it hits 50% Scale the missing sides of the footage reappear again but disappear once I release the mouse.

If I use a mask on the Noise effect, the missing parts of the image only disappear within the active mask area as shown in this image:

This feels like a bug to me? Unless there's a setting or reason for this?

My workaround now is to add an adjustment layer and appy the noise effect to that, which achieves the same end result. But I shouldn't have to do this if this bug wasn't present.

Correct answer Ann Bens

Your sequence setting's pixel aspect ratio does not match the file pixel aspect.

Dark Horse AgencyAuthor

Participating Frequently

Nice one, @Ann Bens. Setting the Sequence Setting Pixel Aspect Ratio to match the footage allows the Noise effect to be applied without the cropping occuring.

It would be nice if the weird cropping didn't occur just because the pixel aspect ratio was different, but this is the reason.

Ann Bens

Community Expert

On a side note: the par is quite odd for a hd (1920x1080( file.

Dark Horse AgencyAuthor

Participating Frequently

It's a stock video, so some weirdness could be inherant, haha!

Ann Bens

Correct answer

Community Expert

Your sequence setting's pixel aspect ratio does not match the file pixel aspect.

Dark Horse AgencyAuthor

Participating Frequently

@Kevin-Monahan

Issue - See original post.
Adobe Premiere Pro version number: Version 24.5.0 (Build 57)
Operating system - MacOS Sonoma 14.5
System Info: CPU, GPU, RAM, HD:
- CPU Apple M1 Pro
- RAM 16GB
- Hard Drive 500GB SSD, Macbook Pro 2021
Video format:
- Type: MPEG Movie
- File Size: 3.37 MB
- Image Size: 1920 x 1080
- Frame Rate: 25.00
- Total Duration: 00:00:02:20
- Pixel Aspect Ratio: 1.2121
- Alpha: None
- Color Space: Rec. 709
- Color Space Override: Off
- Input LUT: None
- Video Codec Type: MP4/MOV H.264 4:2:0
Workflow details:
Steps to reproduce - (Very important!)
1. Drag footage into sequence
2. Apply Noise effect from Effects panel
Expected result - What should have happened after the last step?
- The Noise effect is applied to the footage.
Actual result - What did happen after the previous step?
- The noise effect was applied, but visual cropping occured to the left and right of the visible footage in Program monitor.