by RE:Vision Effects·VFX
Images © RE:Vision Effects. Used for product review; image policy.
REZup stands out in the toolfarm library for supporting fractional resizing, semi-transparent material and extended dynamic range—capabilities the developer notes are uncommon among tools built on AI Deep Neural Network models.
REZup increases the resolution of video without loss of detail or introducing artifacts. It contains two plug-ins, REZup Enhance and REZup Resize, which pair video image processing with machine-learning techniques. Enhance guides you through the steps to improve footage, with control over the look, sharpness, detail, and contrast. Resize adds zoom, ratio, and a reframing window for different upscaling scenarios, and supports fractional scaling, semi-transparencies, and extended dynamic range, with a denoise option included.
It suits upscaling standard-definition content to 4K, improving the resolution of low-res generative AI videos, creating high-resolution LED video wall installations, and remastering older 720 and 1080P movies. It also works with long-to-render CG and pipelines without loss of bit depth or intermediate video files. Combined with Twixtor, REZup Resize can convert VR footage for newer devices and reframe video without loss of detail.
REZup Resize is trained and tested with 2X, 3X, and 4X models; larger factors may need preprocessing with a temporal denoiser or REZup Enhance first. The upscaling models are demanding on GPU processing and memory—upscaling 1080p to 8K needs at least 8GB of VRAM.
Re:Vision Effects REZup is best for upscaling standard-definition content to 4K, improving the resolution of low-res generative AI videos, creating high-resolution LED video wall installations, and remastering older 720 and 1080P footage.
Re:Vision Effects REZup is completely free to download and use.
REZup supports Adobe hosts including After Effects CS6 and up and Premiere Pro CS6 and up, along with DaVinci Resolve 15.0 and up. It also runs in a wide range of other hosts, including Autograph, Baselight, Catalyst Edit, Fusion Studio, Flame, HitFilm, Natron, Nucoda, Nuke, Scratch, Silhouette and Vegas Pro, plus Apple's Final Cut Pro 10.1.4 and up and Motion 5 and up. Check the developer's page for the exact version and platform matrix.
REZup relies heavily on your computer's GPU for both processing power and memory. Upscaling from 1080p to 8K requires at least 8GB of VRAM, and more—such as 12GB, 16GB, 24GB, 32GB, 64GB or 96GB—significantly helps when pushing to higher resolutions. These upscaling models are demanding, so GPU capacity is a key factor in how far you can scale a clip.
REZup Resize is trained and tested with 2X, 3X, and 4X machine-learning models. At larger upscaling factors you may need to preprocess the clip with a temporal denoiser like DE:Noise, also part of Effections, or apply REZup Enhance first for best results. Resize also supports fractional resizing factors rather than integer-only scales, and includes a denoise option to improve results.
REZup is listed as free here in this catalog. Licensing and activation are handled through RE:Vision Effects, and the changelog references a REVisionActivate component used for activation across hosts. For the current licensing terms, supported platforms and any available options, check the developer's page directly, since these details can change over time and the developer's own page carries the authoritative and most up-to-date information.
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