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Masking doesn't work right anymore! HELP please!

Community Beginner ,
Feb 25, 2018

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Hi guys, I'm experiencing a very weird problem. When I draw a mask, with the pen tool on a clip (to create a simple walk by transition) the mask that I drew doesn't match with the actual area that is being masked by the program. It's impossible for me to mask the area that I want in this way! I don't understand why this is happening! any sort of help would be super appreciated.

problem with mask.jpg

As you can see there's this weird gap between the mask area that I drew and the actual masked area. This is becoming a nightmare! I'm using the latest Premiere Pro 2018 verison.

Nope. That was the problem. So sorry guys.
The clip was 1920 x 1080 but, for whatever reason, the adjustment layer was set at 1440 x 1080 by default. I hit 'scale to frame' on the adjustment layer and the masked area popped back to where it should be.
Thank you so so much. Really sorry to bug you guys with such a rookie mistake.

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Masking doesn't work right anymore! HELP please!

Community Beginner ,
Feb 25, 2018

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Hi guys, I'm experiencing a very weird problem. When I draw a mask, with the pen tool on a clip (to create a simple walk by transition) the mask that I drew doesn't match with the actual area that is being masked by the program. It's impossible for me to mask the area that I want in this way! I don't understand why this is happening! any sort of help would be super appreciated.

problem with mask.jpg

As you can see there's this weird gap between the mask area that I drew and the actual masked area. This is becoming a nightmare! I'm using the latest Premiere Pro 2018 verison.

Nope. That was the problem. So sorry guys.
The clip was 1920 x 1080 but, for whatever reason, the adjustment layer was set at 1440 x 1080 by default. I hit 'scale to frame' on the adjustment layer and the masked area popped back to where it should be.
Thank you so so much. Really sorry to bug you guys with such a rookie mistake.

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Feb 25, 2018 2
Community Beginner ,
Mar 03, 2018

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I've encountered the same (or very similar) problem. The masked area is offset and distorted from the actual path I drew. Did you ever figure out how to fix this?

Other masks are working just fine. I'm guessing it would work if I were to start over, but I'd really like to avoid completely redoing mine because it's a rather complex shot and took about an hour to keyframe.

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Mar 03, 2018 0
Adobe Community Professional ,
Mar 04, 2018

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Which property/effect is used for the mask?

Any other effects applied?

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Mar 04, 2018 0
Community Beginner ,
Mar 06, 2018

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It's an opacity mask on an adjustment layer with one instance of Lumetri Color.
In the screenshot below, I've decreased exposure on the color adjustment in order to more clearly show where the affected area appears. It's inexplicably offset from the shape I've drawn. This is the case with every frame. The camera rotation and distance change rapidly in this shot which made the key-framing rather tedious so starting over is definitely a last resort.
Screen Shot.png


Many thanks.

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Mar 06, 2018 0
Adobe Community Professional ,
Mar 06, 2018

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Is there any resizing or scaling involved in this clip?

Neil

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Mar 06, 2018 1
LEGEND ,
Mar 06, 2018

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Are the Adjustment layer, media clip and sequence all the same resolution?

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Mar 06, 2018 2
Community Beginner ,
Mar 06, 2018

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Nope. That was the problem. So sorry guys.
The clip was 1920 x 1080 but, for whatever reason, the adjustment layer was set at 1440 x 1080 by default. I hit 'scale to frame' on the adjustment layer and the masked area popped back to where it should be.
Thank you so so much. Really sorry to bug you guys with such a rookie mistake.

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Mar 06, 2018 1
Adobe Employee ,
Mar 12, 2018

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Try creating an adjustment layer that is the same resolution as your sequence.  This can easily be achieved by selecting File>New>Adjustment Layer while your current sequence is in focus.  1440x1080 sounds like you might have had some HDV preset with non-square pixels selected at some point. 

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Mar 12, 2018 0
Community Beginner ,
Dec 09, 2019

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I've got the same problem. I've got a clip on top of a freezed frame, and the clip has an opacity mask. The area of the blue lines (the mask) and the area the mask is actually affecting seems to be quite different. The clip, the picture (exported frame/freezed frame), and the sequence is in 1920x1080 and has an pixel aspect ratio of 1. I've tried hitting 'scale to frame' on the clip and the picture just in case, but with no luck.

Any solutions?

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Dec 09, 2019 0
Community Beginner ,
Jan 22, 2020

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It randomly worked again.

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Jan 22, 2020 0
New Here ,
Feb 06, 2020

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I still haven't found a solution, as the exact same thing is happening to me, except I'm not even using an adjustment layer, I'm putting the mask right on the clip. I tried copying the mask to an adjustment layer instead and it still did it, even with the resolution set properly.
 

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Feb 06, 2020 0
Community Beginner ,
Oct 12, 2020

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Hi there. Did you ever find a solution to your error? I'm also just applying a mask directly to a clip (no adjustment layer) and the mask is the wrong shape.

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Oct 12, 2020 0
Community Beginner ,
Oct 16, 2020

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I found out what was my problem at least. I don't think premiere likes masking and changing of speed in a clip. So I think you have to nest the clip before you add a mask. Worked for me anyways 🙂

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Oct 16, 2020 1
Adobe Community Professional ,
Oct 17, 2020

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Yes, if you're changing speed/ramping/whatever and applying a mask, you need to nest the clip after whichever you do firts. It somehow separates the order of processing so Premiere gets it right.

 

Neil

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Oct 17, 2020 0