Video noise is one of the most common quality problems in real-world footage — and one of the hardest to fix manually. Whether your footage was shot in low light, with a high ISO setting, or under unpredictable conditions, Topaz Labs' online Video Denoiser uses the specialized Nyx model to analyze and clean your footage frame by frame, removing grain and noise while preserving the detail that matters.

What Is Video Noise — and Why Does It Happen?

Video noise is the visual distortion that appears as random speckles, grain, or unwanted texture across your footage. It shows up as patches of discolored pixels that flicker between frames, reducing the overall clarity and professional quality of your video. Noise is most visible in darker areas of the frame, smooth surfaces like skin or sky, and in areas of uniform color where the distortion stands out most.

It typically shows up when shooting in low light, at high ISO or gain settings, with older or lower-end camera sensors, or when using compressed video formats that introduce artifacts during encoding. The result is footage that can look grainy, muddy, or visually fatiguing — even when the underlying content is excellent.

Try denoising your video footage with Topaz now.

How Topaz Labs Denoises Your Video

Modern AI-powered video denoisers analyze each frame of your footage and intelligently distinguish between genuine image detail and random noise, removing the latter while preserving the sharpness and texture that matters. The result is footage that looks like it was shot in ideal conditions — clean, smooth, and professional — without losing the fine detail that gives your video its character.

The Video Denoiser runs through Topaz Labs' cloud-based web platform, meaning no specialized hardware is required on your end — all the heavy processing happens in the cloud.

Step 1: Open the Video Denoiser

1. Go to astra.app/create and sign in to your Topaz Labs account.
2. From the Astra interface, start a new project or upload directly from the landing page.
3. You'll be taken to the upload and settings panel where you can bring in your footage.

Step 2: Upload Your Video

1. Click Upload or drag and drop your video file into the upload area.
2. The tool accepts most common video formats. Footage shot in challenging conditions — low light, high ISO, older cameras — will benefit the most from denoising.
3. Once uploaded, your video will appear in the project timeline, ready for processing settings to be applied.

💡 Tip: The noisier or more compressed your source footage, the more dramatic the improvement will be. Clean footage shot in good light will still benefit, but the difference will be more subtle.

Step 3: Select the Nyx AI Model

This is the key step that sets the denoising in motion.

1. In the left options panel, locate the AI Model selector. Make sure the "Enhance" tab is on "Precise"
2. Choose Nyx — this is Topaz Labs' dedicated video denoising model, purpose-built for removing noise and grain from real-world footage.
3. Nyx analyzes temporal information across frames (not just individual frames in isolation), which allows it to remove unwanted noise while keeping edges and fine detail intact.

Why Nyx? Unlike general-purpose enhancement models, Nyx is specifically trained on noisy footage and understands the difference between noise patterns and intentional film grain, texture detail, and fine subject edges.

Step 4: Preview Your Settings

Before committing to a full export, use the preview feature to check your results:

1. Select a representative clip or section of your video — ideally a segment with noticeable noise in areas like shadows, skin, or sky.
2. Click Preview to process that clip with your chosen settings.
3. Use the before/after comparison to evaluate how Nyx has handled the noise removal and whether any fine detail has been affected.
4. If the result looks good, proceed to full processing. If you want to try different settings, adjust and re-preview before committing.

💡 Tip: Pay close attention to edges, hair, and high-frequency texture areas in the preview. These are the most common places where aggressive denoising can soften detail you want to keep.

Step 5: Process Your Video

Once you're satisfied with the preview:

1. Click Process (or the equivalent export/render button in the Astra interface) to begin full processing on your entire video. You will see a progress idicator for your video similar to the above image.
2. Processing runs in the cloud, so you can close the tab or work on something else while it runs — you'll be notified when it's complete.
3. Processing time will vary based on video length, resolution, and current server load.

Step 6: Download Your Denoised Video

1. Once processing is complete, the download button will become active.
2. Click the white download button located at the bottom right corner to save your video.
3. Your denoised video will be saved in high quality, ready for editing, publishing, or archiving.