Matrox Electronic Systems Matrox RT.X2 - Manual (Page 156)

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Chapter 4, Setting Up Realtime Effects with Adobe Premiere Pro
Using the Matrox chroma clamper effect
You can use the Matrox chroma clamper effect to ensure that when you’ve
applied effects that perform color space conversion on part of a clip, the clip’s
colors remain constant throughout. Some effects, such as Matrox
hardware-accelerated effects and Adobe Premiere Pro native effects, perform
color space conversions (YUV to RGB) that will clip RGB values to the
acceptable range of 0-255 per color component. The clipping, however, is usually
only required on clips that have very bright or highly saturated colors.
For example, if you split a clip that contains very bright or highly saturated colors
and apply a Matrox 3D DVE to one portion of the clip, you may notice minor
color differences between the two halves on your video monitor. Applying the
Matrox chroma clamper effect to the portion of the clip that does not have the 3D
DVE effect ensures that colors remain constant throughout the clip.
Selecting your speed control method
You can choose the type of speed control that’s best suited for individual clips in
your Premiere Pro projects. By default, the speed control method of each clip in
the
Timeline panel is set to Frame Blend , which interpolates between the video
fields or frames, and typically works well on standard or slow-paced video and
camera pans. For fast action video you may get better results by clearing this
option.
To change the speed control method for a clip in the Timeline panel, right-click
the clip and select Frame Blend to use the speed control method that’s
recommended for standard or slow-paced video and camera pans, or clear this
option for fast-action video.
Remarks
• The Frame Blend option is not supported for speed changes over 200%.
• If you are working in HD, you will need to render if you clear the Frame
Blend option.
About Adobe Premiere Pro’s fixed effects
In Adobe Premiere Pro, every clip in the Timeline panel has pre-applied fixed
effects. When you select a clip in a sequence, the fixed effects appear in the
Effect Controls panel. All fixed effects can be adjusted in the Effect Controls
panel. Adobe Premiere Pro’s fixed effects include the Motion, Opacity, and
Volume effects. Matrox RT.X2 provides realtime support for all of Premiere Pro’s
fixed effects.