I'm using the GIMP with the GAP plugin, and I've been using it to edit frames from a movie. (Fantastic tool btw)

I would like to adjust the contrast and brightness of all the frames. Can this be done with GAP? I've looked but I can't find an option for it :( (Adjusting the frames one by one is not an option, there are too many frames for that)

Thanks,

Marcel Hmmm, It's either very young cheese or very old meat.

Scott Bicknell wrote:

On Tuesday, April 17, 2007 8:38 pm, Marcel wrote:

I'm using the GIMP with the GAP plugin, and I've been using it to edit frames from a movie. (Fantastic tool btw)

I would like to adjust the contrast and brightness of all the frames. Can this be done with GAP? I've looked but I can't find an option for it :( (Adjusting the frames one by one is not an option, there are too many frames for that)

Not directly. What you will need to do is use the Frames to image... Video menu item to get a multilayered image. Then open the Filters menu and select the Filter all layers... item. From there you will have to find plug-ins that affect contrast and brightness.

I found a solution. But not by using a filter that directly affects the contrast and brightness :\

The effect I was looking for was to turn green-screen footage of a person into high contrast black&white/grayscale psuedo cartoon footage. Filtering out the green screen was easy, but getting the cartoon-ish effect required fiddling with an inverted 'contrast mask' layer (set to 'grain-extract') and the 'channel-mixer' filter. (and of course the 'cartoon' filter, but that one was easy :)

(If you've seen the music video for the Gnarls Barkley song 'Crazy' then you'll probably have an idea of the effect I'm trying to achieve :)

Thanks for the help though,

Marcel

--- Trying to learn about software is like trying to nail Jello to a tree