dpx file basic questions

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BabaG
Posts: 150
Joined: Sat Mar 03, 2007 6:41 am

dpx file basic questions

Post by BabaG » Thu May 31, 2007 7:08 pm

what parameters can be addressed in saving to dpx format via
nconvert? how is this done? what is the syntax? is there documentation
on this someone could point me to?

thanks,
BabaG

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xnview
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Re: dpx file basic questions

Post by xnview » Fri Jun 01, 2007 7:36 am

BabaG wrote:what parameters can be addressed in saving to dpx format via
nconvert? how is this done? what is the syntax? is there documentation
on this someone could point me to?
Which parameters for dpx??
Pierre.

BabaG
Posts: 150
Joined: Sat Mar 03, 2007 6:41 am

Post by BabaG » Fri Jun 01, 2007 3:18 pm

not sure what to look for for dpx. i mainly know there are
various parameters for different formats, like amount of
compression for jpg, and that in xnview there are at least
a couple of things when saving a file to dpx; something
pertaining to lut and 8 or 10 bit i think.

how would i address these and what other things might i be
able to set for a save to dpx format?

thanks,
BabaG

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xnview
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Post by xnview » Sat Jun 02, 2007 5:58 am

BabaG wrote:not sure what to look for for dpx. i mainly know there are
various parameters for different formats, like amount of
compression for jpg, and that in xnview there are at least
a couple of things when saving a file to dpx; something
pertaining to lut and 8 or 10 bit i think.

how would i address these and what other things might i be
able to set for a save to dpx format?
For DPX, there is no other parameters
Pierre.

BabaG
Posts: 150
Joined: Sat Mar 03, 2007 6:41 am

Post by BabaG » Sat Jun 02, 2007 4:07 pm

thanks for the reply. are there any plans to support any of these
features of dpx which i got from the graphicsmagick site? would
be much preferable to continue with nconvert rather than having
to jump over to graphicsmagick for dpx conversions. i prefer
nconvert for the native cr2 support, to just mention one thing.
very nice (and thanks so much for the recent fixes)!

also, with all of the various parameters listed below for dpx, which
does xnview default to?

thanks again,
BabaG


Supported DPX features:

* Anything which can be read, can also be written.
* All DPX header information (including the user specific area) are stored as image attributes and restored when the image is written.
* Image source header information is updated appropriately.

Colorspaces:

* Linear RGB
* Cineon Log RGB (default density range = 2.048)
* Grayscale (Luma)
* Rec. 601 and Rec. 709 YCbCr (4:4:4 and 4:2:2). Below-black and above-white values are clipped.

Storage:

* Bits per sample of 1, 8, 10, 12, and 16.
* Packed, or fill type A or B for 10/12 bits.
* All RGB-oriented element types (R, G, B, A, RGB, RGBA, ABGR).
* YCbCr
* Planar (multi-element) storage fully supported.
* Alpha may be stored in a separate element.
* Big and little endian storage.

Yet to be supported:

* Composite video.
* Floating point formats (32 and 64 bits)
* Depth channel (not supportable within GraphicsMagick).

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