Quick Start Guide — Scratch
This guide is for Neat Video v4 plug-in for OFX hosts being used with Scratch 9.
If you use another Neat Video plug-in or another editing application, please select the corresponding quick start guide.
1. Installing the plug-in
To install the Neat Video OFX plug-in:
Make sure you have started Scratch at least once before installing the plug-in. If you
have not done that yet, start Scratch and exit it.
- Download the installer of Neat Video for OFX hosts:
- If you already purchased the product and have a current license for the Pro plug-in, please download the Pro plug-in from My Products page
- If you want to try Neat Video before purchase, please download the Demo plug-in from Download page
- Start the installer:
Double-click the downloaded EXE file to start the installer
For Mac OS X:
a. Double-click the downloaded DMG file to mount the volume
b. In the mounted volume, double-click NeatVideoOFX.Intel.pkg to start the installer
(you may be prompted to enter the Name / Password of the OSX administrator account)
Proceed through the steps of the installation process. Use the default settings offered
by the installer. This should automatically make the plug-in available to Scratch.
- Start Scratch and in the Plugins Browser dialog go to Neat Video4 > Neat Video.
In case the plug-in has not become available in Scratch, please contact Neat Video support for assistance.
2. Running Neat Video on a sample video clip
Please download the test-kit prepared to help you start using Neat Video. Having downloaded, please unzip it to a new folder on the hard disk.
The test-kit includes a sample video clip: SampleClip.mp4. This is a typical video clip captured by a digital video camera in high-gain mode. Some technical information about the sample clip is available in the SampleClipInfo.txt file.
Please start Scratch and go through the steps below to clean the clip using Neat Video.
2.1. Add the sample clip to the project
1. Configure a new project in Scratch
In the Project Settings window select HD 1920x1080 25p.
2. Add the sample clip file to the project
- Click the Media button, then click Import Clips… button and navigate to the folder with input clip, select SampleClip.mp4:
Cursor is now the thumb of the clip.
- Drag the thumb to a slot and click there to drop it in the slot area.
Go to the ColorFX page.
The Scratch preview window will display the sample clip and you will see that there is
strong noise in it. The task of Neat Video is to reduce this noise.
2.2. Prepare to add Neat Video to the clip
- In the Source tab click the Plug-ins … button.
- Scratch will open the Plug-in Browser dialog.
- Click the NeatVideo in the list of plug-ins. This will show the Reduce Noise v4 icon in the right panel of the dialog.
2.3. Configure Neat Video
1. Open Neat Video plug-in window
- Click the Reduce Noise v4 icon in the right panel of the dialog and then click Apply On Node button. This will close the Plugins Browser dialog and will add the plug-in to the clip.
- Select a frame for noise analysis using the timeline selector.
Under Controls, click the Prepare Noise
Profile button. This will open the main window of Neat Video
(If you run the Demo plug-in, click OK in the popup splash screen of the plug-in to proceed further).
The Neat Video plug-in window will open and display the current frame from the clip:
- At this point Neat Video will ask to specify the scan type of the clip. Please select Progressive.
2. Build a noise profile for the clip
To reduce noise in this frame and in the whole clip, Neat Video generally needs a noise profile describing the noise properties of the clip. You can prepare such a profile using the Auto Profile function:
In the Device Noise Profile tab click
Neat Video will then automatically analyze the noise to build a new noise profile:
- Visually inspect the selected area — it should contain no visible details, only noise; otherwise the noise profile and subsequent noise reduction may be inaccurate.
If the selected area does contain any details, move the selection to a featureless area or simply draw a new selection in such an area (the selection must be at least 32x32 pixels large). Then click the Auto Profile button again.
- After that Neat Video is ready to filter the clip.
3. Check Preview
- Switch to the Noise Filter Settings tab
You will notice that Neat Video has already applied noise reduction based on the default filter settings and the preview shows a clearly visible difference: there is less noise than in the original frame.
You can try to adjust the filter settings and see how that affects the results. For example, try to adjust the Temporal Filter > Radius setting (in the Temporal tab in the Filter Settings box in the right part of the window) from 2 to 1 or to a higher value. This will apply weaker or stronger temporal noise reduction to the frame.
4. Apply the changes
- Click in the bottom of the plug-in window.
Neat Video will save the current settings and close its main window.
(If you run the Demo plug-in, it will also describe the limitations of the Demo version at this point).
Once this step is completed and Neat Video window is closed, the filter is ready for work.
The Scratch preview window now shows the clip with noise reduction applied to it:
2.4. Render the video
To apply Neat Video noise reduction
- Render the clip in the regular Scratch way.
This will automatically apply Neat Video noise reduction to the sample clip and save the result to a new video file on the hard drive. You will then be able to open this new file, evaluate the filtration results and adjust the filter settings if necessary.
These Video Tutorials will also help you to get the most out of Neat Video noise reduction.