.chan export import

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  10 October 2007
.chan export import

Hi gang
Anyone know of a way to create .chan files from Camera Lightwave motion files?
cyphyr
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Last edited by cyphyr : 03 March 2008 at 05:47 PM.
 
  03 March 2008
No one know ... bump !
cyphyr
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  03 March 2008
What the heck is .chan?
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  03 March 2008
Originally Posted by Cageman: What the heck is .chan?


Same thing crossed my mind. It seems like some sort of motion file.
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  03 March 2008
.chan files are the motion data files used by the Nuke compositor. Its also the format used by Terragen 2 to import motion data. Aparently Maya can export in that format (and yes I have posted there as well) but I dont have Maya.
thanks
Richard
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  03 March 2008
export .chan in lw or export lw camera data to other app like maya and than get .chan file possible _?
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  03 March 2008
Just grab your camera, then just loop through all the frames reading the camera's info, convert with a little maths if needed (you'd need to know the correct format for Nuke) and then write to a text '.chan' file... A Generic LScript for Layout could do it fairly easy...

From what a few minutes research tells me, the file format is a simple text file, containing the data (tab delimited) for the camera at each frame as:

X, Y, Z position
RotX, RotY, RotZ rotation
Focal Length
Aperature Size

Then each line terminated with a linefeed.

Some fudging of LW's data may be needed to correct it to work in Nuke... But nothing too complex for someone with Nuke to build and test, I'm sure! I don't have, or use Nuke, otherwise I'd be keen to give it a bash...
 
  03 March 2008
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