After tearing my hair and muttering adult phrases for a couple of hours while following the below instructions from the PP CS6 pdf manual, I still can't get anything but a black screen when trying to apply the Image Matte Key to a simple set-up. The project is in HD 1080p50 format and the basic editing has been largely problem free.
Be sure the superimposed clip overlaps the background clip in a Timeline panel.
Matte Luma Composites the clips using the luminance values of the image matte you selected in step 7.
What I do is:
• I have a clip on Video 1. I want to use a hand painted luma matte made in PS CS6 for changing levels ('exposure') in an irregular area of the clip.
• So, I duplicate the clip on Video 2 and add an 'RGB Curves' fx for the level adjustment.
• Then, I add the Image Matte Key to the Video 2 clip and set up the Photoshop b/w image (RGB 8 bit, 1920x1080) from my external eSATA disk containing the Project and media (step 7 above).
• I select 'Matte Luma' (step 9) – and expect the relevant part (painted white on the matte .psd pic) of the duplicated, level adjusted clip to be superimposed on the Video 1 clip.
• But I only get BLACK!
I tried using Track Matte Key, with the matte pic on Video 3 – no problem, worked just as expected.
So, what's the voodoo with Image Matte Key?
Sorry. Me too.
I created a black and white matte in Photoshop, put the same clip on one and two. Adjusted the colors of thr video on track two using the RGB Curves, added the image matte key, told it to use the PSD I created, set it to use Luma, and it worked exactly as expected.
So, perhaps you need to provide more information about the image you used and the video itself?
Ann, Steven, Bill,
Thank you very much for your encouragement and duplication work! Truly appreciated.
This morning, with some fresh energy, I attacked the problem afresh and finally found the culprit(s).
It turned out that the major problem was the Photoshop file I originally prepared as a test matte. I created the original psd through the PP File menu to automatically get the correct dimensions. For some reason, it may have got corrupted. When it didn't work and just resulted in a black image, I used it as a template, changed it and resaved it. Apparently the problem was inherited to the resaved psd:s, even though they worked fine when imported into the project and used as mattes with Track Matte.
Anyway, today I created a brand new matte file in PS CS6 and, lo and behold, Image Matte Key now worked as expected!
Going back to PS, I edited my simple matte (just two black rectangles on white) and applied a rather heavy blur. I then saved (not Save as…), deleted Image Matte Key from my fx stack in PP, reinstantiated Image Matte Key and set it up with the now resaved psd.
I then went back to PS, resaved my blurred matte file with a new file name and repeated the above exercise – first deleting and then reapplying Image Matte Key, setting it up with the new, blurred matte psd.
Now I got a blurred keying effect.
So, it seems that Image Matte Key won't 'see' a changed file – apparently it 'remembers' the first version of the file and refuses to accept the saved changes.
I think that I've seen a post here somewhere about the same or similar problem with PP CS5 or 5.5.
Anyway, I've learned a lot and again, thanks to you guys who chipped in!
Glad that you got it sorted out in your Project.
I have not encountered an issue with Saved versions of my PS Track Mattes (or altered versions), but also do not recall having to make any changes after the creation - so maybe just never experienced what you saw?
About half the time, I create my Track Mattes with Titler, and the other half, they are created in PS, and just Imported. To date, they have worked, as expected for me.
Good luck, and thanks for sharing the cause, plus the good news that you got things working correctly.