Comments in the text below
2013/8/25 Bernhard <[email protected]>
> Hallo Alexandre,
>
> do you know this software: http://lrtimelapse.com/
> I've been following some of Gunther's tutorials and also reading his
> e-book.
>
>
Yes this exactly what is my final need :-)
> He says that in the name lr-timelaps the first two letters are
> representing "level" and "ramp", not "lightroom", even if this is the base
> program of all operations. lrtimelaps reads the xmp information from Adobe
> Lightroom and modifies them to get those deflickering and day-to-night
> ramps correct.
>
> From my understanding you
>
> - want to read the information within the xmp files of a large series
> of shots
> - modify them in a way to get smooth appearance (deflickering from
> one image to the next and day-to-night/brightness ramps over many pictures)
> with some scripts you wrote for this purpose
> - write the modified information back to the xmp files
> - have darktable process them to export jpg files as a base for
> - putting them together to a film in some external software
>
> For this you need a "converter" to translate the xmp files of darktable -
> as they are - to and from a format you can work with.
> (I write this to verify that I - and hopefully others who are familiar
> with those things - get the "job description" right)
>
=> Yes this is exactly my basic need translate XMP files from/to readable
parameters
>
> If this would work -* would be a GREAT extension of darktable *and for
> photo editing in linux altogether!
>
=> I agree totally :-)
>
> (Another example of "deflickering" - not everyone is familiar with that:
> http://www.youtube.com/watch?v=lpWiNTxouOk)
>
> Sorry, I'm not a programmer either - but I like to look at concepts and
> hope to be of help with my comments.
>
=> :-(
> -Bernhard-
>
> Alexandre Jullien schrieb am 25.08.2013 12:51:
>
> Hello everybody,
>
> I have a project for a long time : combine the power of darktable with
> small scripts i've made to export frames for my timelapses.
>
> Let me explain a little bit:
> With the timelapse photography you can encounter some problems with fast
> brightness transitions (flickering). Or you may want to adjust some
> parameters differently at the nightfall transition for example (a tuning
> for daylight, another tuning for the night). In this case, a smooth tuning
> transition is required to have a natural rendering (like in video).
>
> That's why I've developed some scripts to do these jobs but with
> "convert" cli-tool, operating on JPG only. My goal is to do the same with
> darktable thanks to the darktable-cli, or directly indarktable just by
> modifying .XMP files externally.
>
> To do this I just need 2 things:
>
> 1. one way to convert .XMP file in "readable" format to get all filters
> and their parameters defined thanks darktable (blendop params if i've well
> understood the code).
>
> For example, convert .XMP in a file like this (with information like in
> darktable GUI):
> ...
> Exposition
> Brightness = +0.3
> Darkness = 0.0
> White Balance
> Tone = 1.0
> Temperature = 6500
> ...
>
> 2. The opposite function : transform a "readable" file (defined in 1.)
> into a XMP file for darktable.
>
> It could be just one button to export/import this kind of "readable"
> file in darktable.
> Or a self-content little binary in CLI converting XMP in readable file or
> readable file in XMP.
>
>
> Is somebody interesting in this project ?
> Could somebody help me to do this ?
> (I have no knowledge to compile/set environment of development, but I can
> modify/understand code).
> He would have my eternal consideration :-) !
>
>
> examples of some of my timelapses:
>
> Sunset
> with flikering:
> http://www.youtube.com/watch?v=ndWmV1mZhUE
> after filtering with my scripts:
> http://www.youtube.com/watch?v=VLov-Jhn3TM
>
> Daylight
> http://www.youtube.com/watch?v=Bl9G-1oGiGI
>
>
> Alexandre (Toulouse (31) / France)
>
>
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