Re: DPX Support

Bob,

> GraphicsMagick has what I call "read/write" tests where the read/write 
> process is:
>
>  reference --write--> version 1 --read/write--> version 2 --read
>
> The final image is then compared (mean distance method) with the first 
> image written ("version 1").  This is intended to verify that writing and 
> reading the image does not corrupt it.  It is not intended to be a 
> performance benchmark.

Does reading and writing an image to the same version of DPX change it? Is 
it verbatim?

> Under UltraSPARC/Solaris I am seeing performance problems when writing, so 
> with a 2K frame this test is taking 2.620 seconds on Intel Xeon but it 
> takes 6.732 seconds on UltraSPARC.

Note that's over a minute to write one second of a 24fps movie.

Robin
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www.CinePaint.org - Open source digital motion picture software 



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