In fact Kdenlive already has : * levels (interface isn't great, but it does the job allright) * Curves (with a new curve widget from Krita if I'm not mistaken) * 3-way color correction (actually never used it seriously, not sure how usefull it is)
The way Curves was implemented (by using a frei0r plugin and adding a widget from Krita) seems to me like being the easiest and most efficient way... Please correct me if I'm wrong. Cheers, Hugh 2010/7/7 Simon Eugster <simon.eu at gmail.com> > Hi lists, hi Dan, > > As kdenlive lacks basic color information and correction tools like: > Information: > * Levels > * RGB parade etc > * Vectorscope/Waveform > Correction: > * Curves > * Values > * Others known from GIMP > * 3-way color correction (blacks, mids, whites) > I wanted to ask two things. > > > First thing is: We have been discussing about using Gimp, GEGL, and > ShowFoto. > > http://sourceforge.net/mailarchive/forum.php?thread_name=200907081050.55569.kamikazow%40web.de&forum_name=kdenlive-devel > http://www.kdenlive.org/forum/call-integrate-gegl-library-mlt-plugin > http://www.kdenlive.org/forum/studying-digikam-color-and-light-tools > What is the current status? > It is not long ago yet and we have all been busy, so maybe nothing has > changed since. > And about speed of GEGL etc.: My opinion: Better slow color correction > than no color correction at all. > > > Second thing: The color information tools. As far as I know most of > them would have to be programmed first. But how? I'm currently trying > to figure out how to calculate a vectorscope display (it seems that > everyone in the web knows how to do it, because there are plugins for > every possible tool, but they are always in binary form, and I have > been searching for hours for a formula and haven't found anything). > Now I could just make it a frei0r effect. But as a) frei0r seems to be > dead and b) a vectorscope is not used as effect that should be visible > in the rendered video, I want to ask you how this would best be > implemented. Ideally such that it is reusable by other programs. > > The point is also, I would like to do it interactively. Means, if I > e.g. have a levels display[1] I would like to be able to select the > lower 25 % of the curve (all dark pixels) and have them highlighted in > the kdenlive project monitor. So I guess neither frei0r nor MLT would > be suitable for that at the moment? (I don't know MLT yet, and frei0r > only partially) Could MLT probably be extended this way, or is this > not intended? > > > Simon > > [1] http://docs.gimp.org/en/gimp-tool-levels.html > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Sprint > What will you do first with EVO, the first 4G phone? > Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first > _______________________________________________ > Kdenlive-devel mailing list > Kdenlive-devel at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/kdenlive-devel > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.kde.org/pipermail/kdenlive/attachments/20100708/7c2757be/attachment.html>
