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Video behind transparent png [?]

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Patrick Stuart
Video behind transparent png [?]
on Oct 28, 2016 at 6:38:36 pm

Hi all,

I have been building a intro where I have the logo has a video playing behind it with slight transparency using the Set Matte effect. Pretty easy stuff. The logo itself is a transparent PNG and has some text coming out (which also is transparent png files) using simple keyframing and cropping, etc.

But, what I would like is for all that to happen with another video being behind (the main video). Sounds simple enough, but unfortunatly there is a big black box surrounding the whole thing by premirere pro. I have tried with importing the prproj file as well as a rendered file. Both dont seem to work.

I've uploaded a video on youtube to show the logo (hopefully it might help explain what I am looking for).





Hoping there is a relativly simple way of doing this.

Thanks guys.


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Daniel Waldron
Re: Video behind transparent png [?]
on Oct 28, 2016 at 7:50:00 pm

Can you post a screenshot of your workspace/timeline?


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Patrick Stuart
Re: Video behind transparent png [?]
on Oct 29, 2016 at 7:40:22 am

Hi Daniel,

Thanks for replying. Here is a screenshot:


And when I add a background video this is the box that I get:



Can you suggest any ideas?


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Alex Udell
Re: Video behind transparent png [?]
on Oct 29, 2016 at 12:13:40 pm

Hi...

if your logo has an alpha channel...

then you you use set matte...

it's that essentially replacing the alpha channel?

Alex Udell
Editing, Motion Graphics, and Visual FX
Let's Connect on Linkedin
Examples: Retail Automotive Motion Graphics Spots
Example: Customer Facing Explainer Video
Example: Infotainment & Package editorial


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Patrick Stuart
Re: Video behind transparent png [?]
on Oct 29, 2016 at 3:06:26 pm

Hi,

The PNG has opacity @ 100%, blend mode = Multiply.
Set Matte is taken from Video1 using alpha channel. Invert Matte and premultiply matte is selected. Stretch o fit and composite matte is not selected.


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Alex Udell
Re: Video behind transparent png [?]
on Oct 29, 2016 at 3:18:43 pm

based on the pic...

V1 is your background fill?

if so, it's matte (alpha) would be 100% white full frame...

so that means the area around the logo shape would be filled with black....as depicted?

if your intent is to blend the video and logo....and key the logo...

and the logo already has an alpha (based on the logo shape).....why is the set matte necessary?

i'm sure there is something I'm missing...

this is hard one to answer without putting hands on it...

you can send me stuff at: audell999 at ya who dot com

i'll see if I can solve...

thanks!

Alex Udell
Editing, Motion Graphics, and Visual FX
Let's Connect on Linkedin
Examples: Retail Automotive Motion Graphics Spots
Example: Customer Facing Explainer Video
Example: Infotainment & Package editorial


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Dave LaRonde
Re: Video behind transparent png [?]
on Oct 29, 2016 at 4:40:17 pm

What's wrong with doing this in After Effects, which is MADE for stuff like this and not for playing multiple streams of video in real time, which is a job for Premiere Pro?

Always good to use the right tool for the job.......

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Alex Udell
Re: Video behind transparent png [?]
on Oct 29, 2016 at 5:48:47 pm

Dave....I would tend to agree with you....

just trying to help...

Alex Udell
Editing, Motion Graphics, and Visual FX
Let's Connect on Linkedin
Examples: Retail Automotive Motion Graphics Spots
Example: Customer Facing Explainer Video
Example: Infotainment & Package editorial


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Patrick Stuart
Re: Video behind transparent png [?]
on Oct 29, 2016 at 5:51:37 pm

while my laziness probably hasnt helped, I would agree with that. ?

Time to open up After Effects! ('tis been a while!)


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