Posted: Fri, 26th Aug 2005, 5:37pm
Post 1 of 8
So I've figured out a pretty decent way to convert the plugins from AlamDV into Stock footage, and it works great. Its just that everything black in the plugin becomes transparent. Is there anyway to fix this?
Posted: Fri, 26th Aug 2005, 5:53pm
Post 2 of 8
You need to preserve the alpha channel from the original images.
Posted: Fri, 26th Aug 2005, 9:26pm
Post 3 of 8
The idea with converting to stock footage is that you don't need that Alpha channel. When you use stock footage, it is overlayed onto a background track, and the overlay is composited onto the background with the screen setting, removing the black portions of the video, which is what you will normally get it you ditch the alpha channel. The way I convert plugins I like is with Quicktime Pro. I go to File>Open Image Sequence>(Navigate to the images folder in the Plugin and get to the actual images)>Select the first image>Press OK. It will compile the images into a movie, and then you can export the sequence to a movie.
Posted: Fri, 26th Aug 2005, 10:00pm
Post 4 of 8
I thought you were supposed to want the black gone...thats like the big thing when it comes to stock footage in effects lab...i think...
Posted: Fri, 26th Aug 2005, 10:04pm
Post 5 of 8
I think that it will work with the alpha, but i know that Effects lab automatically keys out the black.
Posted: Fri, 26th Aug 2005, 11:06pm
Post 6 of 8
Wait a minute. Is there any way to remove the black around the image, but the black inside the image?
For example, if I have stock footage of a car with black windows, can i get rid of the black around the car ( making it transparent) but not get rid of the windows?
Posted: Sat, 27th Aug 2005, 11:02am
Post 7 of 8
Theres a lot of confusion about this (we might have to do a blending guide). Screen/Add composite doesn't "key out the black". It adds the pixel values from the stock footage to the background. The darker the pixel the less it adds on to the background. If its a totally black pixel then it adds zero to the background (ie it has no effect). This is why people get confused and assume the black is being made transparent.
Screen/Add should only
be used for luminosity effects. All other effects should use a normal blend, and therefore you need an alpha channel.
I described it in a bit more detail in this posthttp://fxhome.com/forums/viewtopic.php?p=189780#189780
Posted: Fri, 2nd Sep 2005, 9:13pm
Post 8 of 8
Wow Malone you really know your stuff!