In fact Kdenlive already has :<br>* levels (interface isn't great, but it does the job allright)<br>* Curves (with a new curve widget from Krita if I'm not mistaken)<br>* 3-way color correction (actually never used it seriously, not sure how usefull it is)<br>
<br>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...<br><br>Please correct me if I'm wrong.<br><br>Cheers,<br>Hugh<br>
<br><br><div class="gmail_quote">2010/7/7 Simon Eugster <span dir="ltr"><<a href="http://simon.eu">simon.eu</a>@<a href="http://gmail.com">gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hi lists, hi Dan,<br>
<br>
As kdenlive lacks basic color information and correction tools like:<br>
Information:<br>
* Levels<br>
* RGB parade etc<br>
* Vectorscope/Waveform<br>
Correction:<br>
* Curves<br>
* Values<br>
* Others known from GIMP<br>
* 3-way color correction (blacks, mids, whites)<br>
I wanted to ask two things.<br>
<br>
<br>
First thing is: We have been discussing about using Gimp, GEGL, and ShowFoto.<br>
<a href="http://sourceforge.net/mailarchive/forum.php?thread_name=200907081050.55569.kamikazow%40web.de&forum_name=kdenlive-devel" target="_blank">http://sourceforge.net/mailarchive/forum.php?thread_name=200907081050.55569.kamikazow%40web.de&forum_name=kdenlive-devel</a><br>
<a href="http://www.kdenlive.org/forum/call-integrate-gegl-library-mlt-plugin" target="_blank">http://www.kdenlive.org/forum/call-integrate-gegl-library-mlt-plugin</a><br>
<a href="http://www.kdenlive.org/forum/studying-digikam-color-and-light-tools" target="_blank">http://www.kdenlive.org/forum/studying-digikam-color-and-light-tools</a><br>
What is the current status?<br>
It is not long ago yet and we have all been busy, so maybe nothing has<br>
changed since.<br>
And about speed of GEGL etc.: My opinion: Better slow color correction<br>
than no color correction at all.<br>
<br>
<br>
Second thing: The color information tools. As far as I know most of<br>
them would have to be programmed first. But how? I'm currently trying<br>
to figure out how to calculate a vectorscope display (it seems that<br>
everyone in the web knows how to do it, because there are plugins for<br>
every possible tool, but they are always in binary form, and I have<br>
been searching for hours for a formula and haven't found anything).<br>
Now I could just make it a frei0r effect. But as a) frei0r seems to be<br>
dead and b) a vectorscope is not used as effect that should be visible<br>
in the rendered video, I want to ask you how this would best be<br>
implemented. Ideally such that it is reusable by other programs.<br>
<br>
The point is also, I would like to do it interactively. Means, if I<br>
e.g. have a levels display[1] I would like to be able to select the<br>
lower 25 % of the curve (all dark pixels) and have them highlighted in<br>
the kdenlive project monitor. So I guess neither frei0r nor MLT would<br>
be suitable for that at the moment? (I don't know MLT yet, and frei0r<br>
only partially) Could MLT probably be extended this way, or is this<br>
not intended?<br>
<br>
<br>
Simon<br>
<br>
[1] <a href="http://docs.gimp.org/en/gimp-tool-levels.html" target="_blank">http://docs.gimp.org/en/gimp-tool-levels.html</a><br>
<br>
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</blockquote></div><br>