Effects spill outside the boundries of my masks? Why? at DVinfo.net

Tyson Persall · September 19th, 2006, 05:07 PM

I have a video clip on the timeline that is scaled down to a 50% size and I have used a mask to crop down a certain area of the video. When I apply an effect the video the effect is applied to the entire video and will not stay with in the mask area only. In other words, I want the effect only to affect within the masked off part of the footage and not spill outside the mask. This seems like an error in the program to me.

Nate Schmidt · September 19th, 2006, 05:49 PM

Try adding the effect first then the mask.

Tyson Persall · September 19th, 2006, 06:21 PM

I tried this but still the same error? It will crop the video fine but not the effect appleid to the video.
I am having to render the effect on the video on another timeline and then reload the file with the new video footage with the effect renderd to it.
This is a timely workaround and unsatisfactory.

Conor Ryan · September 23rd, 2006, 08:41 AM

I'm assuming you use After Effects, if not, ignore:

Unfortunately, masks and effects don't react to one another in order of application. The look you achieve also depends on the effect you use.

A simple way to get it done most of the time would be to use a masked or small adjustment layer (mask if you want complex shapes or small if you just want a square) over the layer you want to affect. Usually works

Alternatively, instead of rendering the video out then re-importing, try nesting the comp, in comp 1 add the effect to the layer. put comp 1 into comp 2, then apply the mask.

Tyson Persall · September 23rd, 2006, 01:13 PM

ooohh, That would work. I should have thought of that. I do the same thing in Premiere pro all the time but not in AFX.

And an Adjustment layer might work. I have never really used an Adjustment layer casue I didnt know what they did.

Thanks Conor. I had been waiting a week for a new idea.

Conor Ryan · September 24th, 2006, 03:56 AM

No probs, sorry it took so long.

September 19th, 2006, 05:07 PM	#1
Tyson Persall Major Player Join Date: Sep 2004 Location: North Hollywood, Atlanta Posts: 437	Effects spill outside the boundries of my masks? Why? I have a video clip on the timeline that is scaled down to a 50% size and I have used a mask to crop down a certain area of the video. When I apply an effect the video the effect is applied to the entire video and will not stay with in the mask area only. In other words, I want the effect only to affect within the masked off part of the footage and not spill outside the mask. This seems like an error in the program to me. __________________ Tyson X

September 19th, 2006, 05:49 PM	#2
Nate Schmidt Major Player Join Date: Jul 2005 Location: Welland ON Posts: 515	Try adding the effect first then the mask. __________________ "We've done the impossible, and that makes us mighty."

September 19th, 2006, 06:21 PM	#3
Tyson Persall Major Player Join Date: Sep 2004 Location: North Hollywood, Atlanta Posts: 437	I tried this but still the same error? It will crop the video fine but not the effect appleid to the video. I am having to render the effect on the video on another timeline and then reload the file with the new video footage with the effect renderd to it. This is a timely workaround and unsatisfactory. __________________ Tyson X

September 23rd, 2006, 01:13 PM	#5
Tyson Persall Major Player Join Date: Sep 2004 Location: North Hollywood, Atlanta Posts: 437	ooohh, That would work. I should have thought of that. I do the same thing in Premiere pro all the time but not in AFX. And an Adjustment layer might work. I have never really used an Adjustment layer casue I didnt know what they did. Thanks Conor. I had been waiting a week for a new idea. __________________ Tyson X

September 23rd, 2006, 08:41 AM	#4
Conor Ryan Regular Crew Join Date: Oct 2004 Location: Dublin, Ireland Posts: 67	I'm assuming you use After Effects, if not, ignore: Unfortunately, masks and effects don't react to one another in order of application. The look you achieve also depends on the effect you use. A simple way to get it done most of the time would be to use a masked or small adjustment layer (mask if you want complex shapes or small if you just want a square) over the layer you want to affect. Usually works Alternatively, instead of rendering the video out then re-importing, try nesting the comp, in comp 1 add the effect to the layer. put comp 1 into comp 2, then apply the mask.

September 24th, 2006, 03:56 AM	#6
Conor Ryan Regular Crew Join Date: Oct 2004 Location: Dublin, Ireland Posts: 67	No probs, sorry it took so long.