Participating Frequently

When you apply a mask to a video that has been rotated 90 degrees from horizontal to vertical via transform effect, the video is rendered incomplete.

Forum|Forum|23 days ago
September 7, 2026
3 replies
40 views

to reproduce:
1.) add transform effect to a horizontal Video in the source effect section with 90 degrees rotation (this is neccesairy to correct Videos early in the pipeline that are intended to be vertical but the rotation tag is either wrongly set or not present at all like in many professional cameras.)
2. place the video in a vertical sequence (9:16 or 1080x1920 for instance)
3. Mask the Video (in my case with the new pen tool)
4. result: when applying the mask the video or the sequence get cropped to its original orientation (1920x1080) at top and bottom in addition to the mask and the mask does not animate via keyframe (this may be another, seperate bug)

Premiere 26.3.2 (build02)
Windows 11
Nvidia RTX4070, Driver 591.86
i714700k, 64GB RAM

PS:

The error does not occur if the video is rotated 90 degrees in the Clip Effects panel instead of in the Source Effects panel. However, this results in vertical videos being displayed incorrectly in the Source Monitor and in the Library when they come with incorrect or missing orientation tag.

KatieToo

Community Manager

@christiang84993798 Thank you for providing the project files and sample media to our Dropbox. This does appear to be recreating an issue we filed a bug report on, so I’ve added it to that along with your files.

To note, providing this workaround discussed in DM in case another runs across this issue below -

“If you scale the video in the Source Effects to a size that matches the height of the original video's canvas, it won't be cropped in the program monitor either. All in all, however, this doesn't simplify the workflow, even though it prevents the display error.

I've now found a solution for myself: using ExifTool outside of Premiere to add a 90-degree rotation tag to all the clips via command line. It was time consuming, but it was the cleanest way to be able to work in Premiere as usual.”

I’ll provide any update once those details become available, and we really appreciate all your time reporting about this.

Thanks for your effort,
Katie

christiang84993798Author

Participating Frequently

Thank you very much, Katie, for your kind response and for passing this along. I'm really glad you've taken notice of this.

It's often these small, inconspicuous features that have a big impact on my workflow and the user experience in general.

Chris

KatieToo

Community Manager

Hi @christiang84993798

Appreciate you stopping by the Premiere forums and giving us those helpful details about that vertical video masking issue. Our team is looking into this.

In the meantime, I did want to confirm about your driver. Is that 591.86 the Game Ready Nvidia driver? Or were you using Studio version?

Is this issue also happening just in that project, or all your projects? What about if you open a new project and import a clip and try doing the same in there?

Finally, would you be willing to provide a sample media clip that you’re seeing this happen on? One preferably that is needing rotated already so we can test that on our side properly. You may be able to attach it here, or if not, you can use our Dropbox upload link. I’ll DM you that.

Hope to help,
Katie

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