Commotion 1.5 lets you work with multiple video clips and is most useful for adding special effects to a ﬁnished product and cleaning up images. lt offers keyframing and other features for manipulating objects across time, along with Photoshop-like drawing tools and effects ﬁlters. Uncompressed ﬁlm and video frames can be played back in real time on a Mac. with a frame rate limited only by the amount of available RAM. Once you’ve painted on individual frames or a sequence. you can see your work play back in real time.
SOME OF ITS CHARACTERISTICS
Realtime software playback of uncompressed clips at 25. 30 or variable frame rates directly from RAM I Support for independent frame rates (including 24, 25/30 fps. 60- ﬁeld NTSC and PAL), image resolutions up to 720×576 and bits depths of l, 4, 8, l6 and 32 bits per pixel I Open and Save of subwindows allows a portion of an image to be opened and manipulated, then inserted back into the area of the picture from where it came.
Open and Save of PlCT and QuickTime 3.0, as well as support for Adobe’s ﬁle format plug-in format (Targa, TlFF, SGI, etc.). THE PAINT TOOLS The most versatile tool in Commotion is the Super Clone brush, which allows you to toggle among up to four source images and pre- view them against the target image before compositing.
Super Clone Brush allows cloning between various ﬁles and differing frames in a clip. Auto-Paint can be used to repeat or animate brushstrokes over a series of frames and create Write On effects
Vector animation can be achieved by applying any of the paint tools to any spline shape. Wacom pen tablet support for size and pressure values (Marquee, Lasso, Pencil, Paint. Air Brushes, Bucket, Gradient, Eraser, Eye Dropper. Blur/Sharpen. Srnudgef Magic Wand, with RGB and HSV independent tolerance controls.
Onion Skinning for reference to pastifuture paint frames as lower opacity overlays. Settings permit multiple frames to be displayed at varying opacities . Compositing allows for quick previewing of composites or channel math while you paint, including on-the-ﬂy previews of composites as you touch up matte edges. Supports masks and alpha channels.
Flip, invert and rotate images
Wiggle effects can be applied to any brushstroke to add motion to static objects. image manipulation: RGB and HSL controls, levels, lookup ta- bles, brightness and contrast
Channel-independent blurs, including Blur White and Blur Black to blur mattes
Convolution ﬁlters, minimum and maximum for choking mattes, and custom kernels. Sharpening ﬁlters, including noise introduction and removal ﬁlters I Field interlacing and de-inter- lacing ﬁlters for changing time base, processing frames, and re- versing the ﬁeld dominance of a clip.
ROTOSPLINE root Commotion’s rotosplining function, its most useful feature, lets you create Bézier paths around objects over time. By changing the shape of the paths frame by frame, you can create animated splines and play them back in real time. Keyframable Bézier spline creation I Spline playback at accelerated rates over actual footage
Spline shapes can be interactively rotated and scaled to quickly track objects that are rotating or changing in size
Feathering capabilities can be set to feather spline edges in, out or orcentered on the spline.
THE FINAL worm
Hefty RAM requirements, hardware key copy protection, a lack of text capabilities and no support for plugins detract somewhat from Commotion’s charm. On the upside, it offers speedy video playback, professional-quality rotoscoping tools and robust masking and compositing support. ln short, Commotion is a veiy good reason for video profession- als to continue to use the l\/lac for serious production work.
FIN Paint Choose visual frames and playback in motion LE, painting on video fast and intuitive Moving mattes simply and quickly Create pixel-perfect mattes and revise on the fly. lnstant playback of splines over your clips makes it possible to produce precise, accurate mattes Superclone from any
See your effects on the spot. The Super- Clone brush lets you combine images by painting with pixels from any clip. With both temporal and spatial offsets, the SuperClone brush makes precise cloning an easier task.
Autopaint for write-on and wiggle Repetitive tasks can be cut down with Commotion LE’s autopaint. You can record your paintstrokes and play them back on multiple frames, add write-on and wiggle effects and see the results immediately.