ONYX AI Matte 3.3.0

Free Download ONYX AI Matte for Windows PC. It is a professional, AI-powered matte extraction plugin that creates clean, production-ready masks for VFX and compositing work.

Overview of ONYX AI Matte

A hardware-accelerated matting solution built for visual effects artists, compositors, editors, and motion professionals who want accurate object isolation without spending hours on manual rotoscoping. It combines modern artificial intelligence with practical masking and tracking tools, making difficult extraction jobs faster and easier to manage.

The plugin works with popular OFX-based production applications, including DaVinci Resolve, Fusion Studio, Nuke, Flame, and Natron. Its workflow is designed around one unified pipeline where different selection methods can work together. This means you can identify an object using text, points, boxes, or an existing mask, then keep refining the result without rebuilding your setup.

AI-Powered Matte Extraction

The tool uses Meta SAM3 for intelligent object segmentation, along with VitMatte and MEMatte refiners to improve matte quality. Think of the main AI model as the artist making the first selection, while the refiners act like precision brushes that clean up difficult edges.

This combination is especially useful for hair, fur, clothing, moving people, and other subjects that are difficult to isolate manually. Instead of drawing detailed shapes frame by frame, artists can create a starting selection and allow the software to handle much of the repetitive work.

Multiple Prompting Methods

One of its most useful features is the unified prompting system. Box, point, text, and mask prompts can exist together within the same scene, with support for up to 16 objects. This provides plenty of flexibility when a shot contains several subjects or complicated foreground elements.

Text prompting lets you type an object class to automatically detect matching subjects. You can also enter multiple classes using comma-separated terms. For more precise control, point selection lets you click directly on an object, while positive and negative points can help correct the selected area.

A bounding box provides another quick approach. Simply draw a rectangular region around the subject, and the AI uses that area to create the mask.

Powerful Mask Prompt Workflow

Existing masks can also become useful starting points. You can provide a mask from a single frame and let the tool track it through the sequence. This can turn a basic one-frame roto into a moving matte without requiring the same shape to be redrawn repeatedly.

The workflow is not limited to complete objects. It can also follow smaller parts, such as a sleeve or car door. If the mask needs correction later in the shot, you can move it to the required frame and place a correction key there. This gives artists a practical balance between automation and manual control.

Automatic Object Tracking

Tracking helps masks follow subjects as they move across frames. The software automatically propagates selected objects through the footage and offers four tracking modes for different shot types.

This feature can save considerable time in scenes containing moving actors, vehicles, products, or other foreground subjects. Instead of adjusting every frame individually, you set the target and let the tracking system do much of the work.

Convenient Object Manager

An on-canvas Object Manager keeps multi-object projects organized. Artists can isolate individual objects, control their visibility with keyframes, refine selections, and remove objects that are no longer needed.

This becomes particularly helpful in crowded scenes. For example, when several people appear in one shot, you can detect multiple subjects and then focus on a particular actor. Managing individual mattes from one interface makes complex compositions feel far less cluttered.

High-Quality Edge Refinement

Creating a rough mask is only part of professional compositing. Fine details around hair, fur, transparent-looking edges, and fast motion can determine whether the final composite looks believable. The software automatically creates a trimap from generated masks and uses an AI refiner to improve those difficult boundaries.

Artists can switch instantly between VitMatte and MEMatte depending on which one produces the better result for particular footage. VitMatte serves as the default option, while the second refiner provides an alternative for challenging material.

Refiner Direct Input

You do not have to use the built-in segmentation system to benefit from its refinement technology. Refiner Direct Input lets you connect an external matte directly to the refinement stage.

For example, you can bring in your own roto or a mask created with Mocha or another tracking system. The AI then concentrates on producing cleaner alpha edges. This makes the plugin useful not only as an automatic masking solution but also as a finishing tool within an existing VFX pipeline.

Faster GPU Processing

Performance is important when processing long sequences and high-resolution footage. TensorRT acceleration can provide approximately three to four times faster refiner inference on supported NVIDIA RTX graphics cards. This reduces wait times when processing demanding masks.

The hardware-accelerated approach is particularly valuable for 4K and higher-resolution compositing. Faster processing allows artists to spend more time judging creative results instead of waiting for every adjustment to finish.

Temporal Smoothing and Edge Controls

AI masks can sometimes shift slightly from one frame to the next, which may create visible flickering. Temporal smoothing and edge stabilization reduce these variations and create cleaner movement throughout a sequence.

Several edge controls are also available for final adjustments. Users can feather edges, shrink or grow the matte, change offsets, adjust levels, and apply a binary threshold. These controls make it easier to tune the result for different compositing situations.

Real-Time Preview and Disk Caching

An overlay preview displays the mask directly over the footage, with customizable colors that make selected areas easier to inspect. Seeing the matte in context helps you identify weak edges and incorrect regions before moving deeper into the composite.

The Bake to Disk feature can cache completed masks for later playback. Once cached, you can reopen a project and play the masks without the AI engine or the same VRAM usage. This is especially useful when projects grow large or need to move into later production stages.

Ideal Uses for VFX Artists

The plugin fits many professional production scenarios. It can help isolate multiple characters, extract difficult hair and fur, discover subjects quickly through text prompts, and process high-resolution shots inside major compositing applications.

It is equally useful when another tool has already handled the basic roto or planar tracking. By sending that matte through the dedicated refiner workflow, artists can focus on producing cleaner edges while keeping their established production pipeline intact.

System Requirements

• OS: Windows 10/11 64-bit
• AI Models: Meta SAM3 + VitMatte + MEMatte (ONNX, FP16)
• Acceleration: NVIDIA CUDA 12.6 + TensorRT 10.x
• Driver: NVIDIA R560 or newer (CUDA 12.6)
• VRAM: 6GB minimum / 8GB+ recommended
• RAM: 16GB minimum / 32GB for 4K
• GPU: NVIDIA RTX 20-series or newer (RTX 2060+, SM 7.5+)
• Hosts: DaVinci Resolve, Fusion Studio, Nuke, Flame, Natron — any OFX-compatible app (Nuke 13+)
• Not supported: GTX 1000-series, AMD Radeon, Intel Arc
• Storage: 20GB or more

Conclusion

ONYX AI Matte provides VFX professionals with a faster way to create, track, refine, and manage high-quality mattes. Its combination of AI segmentation, multiple prompt types, automatic object tracking, dual refinement engines, temporal smoothing, GPU acceleration, and external matte refinement can significantly reduce repetitive roto work. With support for popular compositing environments and demanding 4K workflows, it offers a flexible solution for creating polished alpha masks while giving artists enough manual control for challenging shots.