Re: [Openexr-devel] OpenEXR 1.6.0 and CTL 1.4.0 released

[Florian Kainz]

B44 produces fixed-size files; and some people have explicitly
asked for this feature.  With B44A file size can vary (but B44A
files are never larger than B44 files).

On systems dedicated to real-time recording or playback you
may want to pre-allocate space for the images, for example,
to minimize seek operations on disks.  In this case you may
want to use B44 compression.  You could use B44A, but it
wouldn't buy you anything.

Florian



Ken McGaugh wrote:
> On 04/08/2007, at 1:14 PM, Florian Kainz wrote:
> >         - Added B44A compression.  This is a variation of B44, but  with
> >           a better compression ratio for images with large uniform  
> > areas,
> >           such as in an alpha channel.
>
> Are there any disadvantages to using B44A versus B44?
> Or should we just always use B44A?
>
> Thanks for a great release.  I've been looking forward to this for a  
> while.
> --Ken
>
>
>
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