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Re:Vision Effects Twixtor Pro

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Contents
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The Stats

Mac Universal After Effects CS3 Compatible After Effects 7 Compatible FxPlug

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Purchase Twixtor

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Download Demo

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Description

Twixtor intelligently slows down, speeds up or changes the frame rate of your image sequences.

Twixtor raises the bar in motion estimation. Twixtor 4.5 introduces a complete rewrite of its tracking. Twixtor is much more accurate, tracks objects farther, and exhibits fewer artifacts when there are objects crossing in the scene. This means less tearing and stretching of objects as they cross or go out of the frame. Twixtor enables you to speed up, slow down or frame rate convert your image sequences with visually stunning results. In order to achieve its unparalleled image quality, Twixtor synthesizes unique new frames by warping and interpolating frames of the original sequence... employing RE:Vision's proprietary tracking technology that calculates motion for each individual pixel.

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Twixtor Features

  • Calculation of motion vectors at each pixel.
  • Warping and interpolation of frames to "time warp" input footage.
  • Smart processing of interlaced material
  • Stretching of a sequence using a single scaling parameter.
  • Keyframable retiming for complete control on a frame by frame basis.
  • Frame rate conversions made easy (Important Note: frame rate conversions are supported only from within After Effects and Combustion ).
  • 8 and 16 bits per channel processing (no floating point).
  • Tracking completely rewritten from the ground up. Twixtor is much more accurate, tracks farther, and exhibits fewer artifacts when there are objects crossing in the scene.
  • Option to automatically enhance dark imagery or imagery with poorly defined edges. In many cases, footage that was difficult to track becomes much more well-behaved upon retiming.
  • Now contains an option to remove motion motion blur upon slowing footage
  • Support for marking material so that Twixtor does not motion-interpolate across a cut.
  • After Effects only: ability to remap audio and video using AE's time remapping tools but using Twixtor "under the hood"
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Twixtor Pro Features

  • Object separation. Support for foreground and background separation using a specified matte. Twixtor then tracks each layer separately for improved results. This feature uses proprietary filling and tracking techniques when working on the background layer even when it is obscured by the foreground! In certain hosts there is support for up to 3 foreground layers.
  • Track Point Guidance. Up to 12 tracking points can be specified to help guide Twixtor's motion estimation. By using the tracking points you can explicitly tell Twixtor where a pixel moves from one frame to the next in order to guide Twixtor's calculation of motion vectors. You can set the position of each point at each frame by hand, but more importantly, these points can be positioned from frame-to-frame using the host application's point-tracking features. Not available in Sparks versions.
  • Spline Guidance. When Twixtor exhibits tracking problems, you can guide Twixtor by simply creating and animating shapes to show Twixtor where objects are actually moving. Interactive feature registraion is directed through the host program's drawing and roto tools (splines and polylines), not through a grid of mesh points! As such, there is no new interface to learn! This feature only vailable for Shake 3.0 (and later) and After Effects 5.0 (and later) and combustion 3.0 (and later).
  • Motion Vector Import. Give Twixtor motion vectors generated elsewhere (like from a 3D system) to time remap footage, including adding motion-interpolated fields to otherwise progressive material. Only supported in apps that work in 16bpc or higher.
  • Motion Vectors Export. You can now output the motion vectors that Twixtor generates internally. This powerful feature comes with visual debugging modes to more intuitively assess and tune the quality of the motion estimation. The motion vectors can then be used elsewhere in the pipeline (including the Twixtor plugin that imports motion vectors). Only supported in apps that work in 16bpc or higher.
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Feature Matrix

This feature matrix helps to explain which features Twixtor supports which host application. In the table below, X means supported. When the word PRO is used below, it is to mean only in the Twixtor PRO version.

Image:ReVtwixtor-chart.png

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How does Twixtor compare to Timeblend in After Effects 7?

(Posted to the AE List by Peter Litwinowicz from Re:Vision Effects) Thought I'd answer this with respect to Twixtor and AE 7's "pixel motion" setting (the time remap setting of AE 7 with no user settings) and its Timewarp filter (that allows you to tweak the settings for the retiming):

  • Twixtor is at least 2 times faster (against both AE's "pixel motion" setting for time remapping and the the Timewarp filter). Often Twixtor is even faster than 2x than the Timewarp plugin; it depends on the settings and whether or not you are adding motion blur upon speeding up a clip.
  • Twixtor has a feature that allows you to not generate inbetweened frames on either side of a cut edit in your source clip (and, for dissolves,Twixtor has a way to turn off the motion estimation for just the transition based on where the transition is located in the source).
  • Twixtor works in floating point (AEs "pixel motion" works in floating point, but the Timewarp filter with changeable settings does not).
  • Twixtor has the ability to remove motion blur upon slowing down footage. Timewarp will not remove motion blur; it only adds motion blur (a feature which Twixtor has as well).
  • Twixtor does frame rate conversion very simply and is built in to the plugin. Pixel motion works as expected in this regard, but the Timewarp plugin assumes you will time-stretch the footage in a comp that's the same frame rate as your source (as far as I've been able to figure out). I presume you can do the time-stretch math yourself... Precomping and retiming in the original source frame-rate and then put that into a comp with the required output frame-rate... a bit more work for the workflow.

Twixtor Pro also has many features to help you fix problems when they occur in the tracking. Most notably, when the tracking goes bad, Twixtor allows you to use AE's splines (masks) and point positioners to show Twixtor exactly where things are moving from frame to frame. There are no corresponding features in Timewarp or AE's "pixel motion" setting.

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The differences between the FxPlug and After Effects-compatible versions of Twixtor for Final Cut Pro

The After Effects-compatible version only works in 8 bits-per-channel while the FxPlug version works at all bit-depths supported by Final Cut Pro. Note that 8 bit processing within the FxPlug version is significantly faster than the After Effects-compatible version, but 10 bit or full precision YUV processing takes longer than the 8 bit processing in order to take full advantage of the extra bit depth. The FxPlug version only works in FCP 6.0.3 and up, the After Effects-compatible version works in FCP 4.0 and up. A license for the After Effects-compatible version also works on the same machine from within After Effects, Premiere Pro and Combustion.


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Samples of Twixtor Pro

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Support

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Tutorials

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Render Farm Information

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Reviews

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Press Release

New in version 4.5.6 for After Effects 7.0 (edited) RE:Vision Effects updates Twixtor and ReelSmart Motion Blur with High Dynamic Range image support and a major performance upgrade for Adobe After Effects 7.0.

RE:Vision Effects releases updates to the After Effects-compatible versions of Twixtor, their popular retiming solution, and ReelSmart Motion Blur, which adds and removes motion blur based on per-pixel calculated motion. The versions updated are compatible with After Effects, combustion, Final Cut Pro and Premiere Pro.

Twixtor and !ReelSmart Motion Blur adds High Dynamic Range (floating point) image support when running within After Effects 7.0, Professional edition.

Users of Twixtor and ReelSmart Motion Blur will see a significant speed boost within After Effects 7.0 on Macintosh G5 CPUs running Mac OS 10.4 (Tiger). Computation times have been reduced by approximately 25 to 35% on such machines (however, each project is different and speedup percentages will vary).

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