8

YUV Files 685
16-bit SGI LogL—
Creates a color image that also
includes a logarithmic encoding of the luminance
channel.
32-bit SGI LogLUV —Creates a color image that
includes a logarithmic encoding of the luminance
channel and UV color coordinate information.
Stor e Alpha Channel—When on, stores the alpha
channel along w ith other image data. Alpha data
adds8bitsperpixeltotheimagetypeyouselected.
Compression Type group
Lets you render a compressed TIFF file.
Default=No Compression.
No Compression—Does not compress the rendered
image.
Packbit s—Uses the TIFF Packbits algorithm to
compress the file.
Dots Per Inch—Sets the dots per inch (dpi) for the
saved image. This setting does not change the
resolution of the final image, but can affect the way
it prints in documents.
YUV Files
YUV files are sti ll-image graphics files in the
Abekas Digital Disk format.
YUV is supported only as an input file format. You
can use YUV files as general-purpose bitmaps, but
you can ’t render to a YUV file.
RAM Player
Rendering menu > RAM Player
TheRAMPlayerloadsaframesequenceinto
RAMandplaysitbackatselectedframerates.
The RAM Player has a channel A and a channel
B. Two different sequences can be loaded into the
channels to play back together, giving you the
ability to compare them.
Clicking and dragg i ng in the channel display
w indow allows you to set the A/B divider b etween
the two channels. The right mouse button “scrubs”
the animation through al l of its frames. Hold the
right mouse button and move the mouse left to
move the animation back to the first f rame. Move
the mouse r ight to advance the animation to its
end.
For b est RAM Player performance, Gamma
should not be enabled in Customize > Preferences
> Gamma.
Interfa ce
Channel A/B
Open Channel—Displays an Open File dialog
that lets you select a file to lo ad into the channel.
After you have selected a file, the
RAM Player
Configuration dialog (page 3–687)
appears that
allows you to set height, width, and memor y usage
for t hat channel.
Open La st Render ed I mage—Loads the last
rendered image into the cha nnel. Nothing is
displayed if there is no last rendered image
available.
Clo se Chan n e l—Unloads the image in the channel
and frees up your memory.