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334 Chapter 19: Video Post-Production
Devices—
Lets you choose a n installed hardware
input device; for example, a digital disk recorder.
Opti ons —Displays the Image Input Options dialog
(page 3–334) to allow you to set up alignment, size,
and frame range for the input image.
Cache—Stores a bitmap in memory. If you are
using a sing le-image bitmap, you can choose this
option. Video Post won’t reload or scale the image
for each frame.
Image Driver group
Thesebuttonsareavailableonlywhenyouchoose
adeviceastheimagesource.
About—Provides information on the source of the
image-handler software used to bring the image
into 3ds Max.
Setup—Displays a setup dialog specific to the
plug-in. Some plug-ins might not use this button.
Video Post Parameters group
V P Sta rt Time/End Time—Sets the start ing and
ending frames for the selected event within the
overall Video Post queue. Video Post renders the
event over the number of frames specified here.
Enabled—Enables or d isables the event. When
this box is off, the event is disabled and Video
Post ignores it when rendering the queue. Each
eventmustbedisabledindividually.Forexample,
disabling a composite layer event does not disable
the composited im age events. The range bars of
disabled events are unavailable in the event track
area.
Image Input Options
Rendering menu > V i deo Post > Video Post window >
Make sure no events are selected in the queue. > Video
Post toolbar > Add Image Input Event > Select a file for
input. > Options
The Image Input Options dialog contains controls
for setting the image’s size and placement relative
to the frames of video output. For animated input,
you a lso use it to synchronize the Image Input
event with the frame sequence of video output.
The same dialog appears w hen you click Options
from the Mask area of the Filter Event and Layer
Event dialogs.
Procedures
To align the input image, do one of the following in
the I mage Input Options dial og:
• Choose Presets and then click one of the preset
alignment buttons.
• Choose Coordinates and then enter t he X,Y
coordinates for the image’s loca tion.
The upper-left corner is (0,0) for both the input
image and the output frame. Increasing X
moves the image to the right, and increasing Y
moves the image dow n. Negative values move
the image in the opposite direction. X and Y
values specify pixels.
To set the input image size, do one of the following
in the Image Input Options dialog:
• Choose D o Not Resize to maintain the image’s
original resolution.
• ChooseResizetoFittochangetheimagesizeto
match the output frame.
This can change the image res olution, causing
it to be rescaled for every frame.
• ChooseCustomSizeandthenenterthewidth
and height of the image in the output fr ame.