# Audio and video settings
# Video
In the application window, go to the Settings menu by clicking on the 
button. Next, select the camera in the Video subsection of Audio and Video.
If the Face tracking feature is enabled, the built-in AI module will crop the video so that your face would always remain in the center while the background on both sides would be mostly cut out. The resulting frame will be scaled to fit the available video area. If there are two or more persons in the frame, the video will be adjusted to fit all of them. Your face will be tracked even when you are moving.
Face tracking is available for the cameras with the resolution 1280х720 (720p) or above.
# Document or whiteboard recognition
This feature allows you to highlight and enlarge a specific area in the video transmitted by your webcam, such as a board during online lessons. The highlighted area will be transmitted in an "expanded view," taking the shape of a proper quadrilateral. In simpler terms, when broadcasting a board in your class, you can spend less time adjusting the camera directly in front of the board's plane. Even if it is tilted at an angle, other participants in the conference will see it "straight," as if it were directly in front of the camera.
To enable this feature:
Go to Settings → Video and find the Camera settings section.
Click the
button in the bottom right corner of the camera image:
Select the recognition area by placing the frame points in the desired positions. In this window, you can also rotate (
) or mirror (
) the transmitted image:
Go to the Preview menu by clicking the corresponding button. Set the required aspect ratio if you need to narrow or stretch the transmitted image:
In the same window, there is a checkbox Remove people from the image. When this feature is enabled, the neural network will automatically remove all people from the frame.
To complete the setup of the recognition area, click the Confirm button.
Please note that after pressing the Confirm button, you will no longer be able to return to the previous menu and modify the recognition area. You will need to start configuring the board area from scratch.
If necessary, you can change the settings of the specified recognition area by clicking , after which a context menu will appear:
In settings modification mode, you cannot set a different recognition area or flip the image. If you need these specific settings, click Disable and reconfigure the necessary parameters.
# Background blurring
TrueConf provides background blurring feature. It is available for any computer that meets the general system requirements and can be used for both one-on-one video calls and group video conferences.
The blurred background feature can be useful in a slew of situations, e.g., if you need to focus on the task at hand during meetings. Even if you don't work remotely, office distractions can be a problem.
This feature is also useful for remote learning, as children's rooms may have an unsuitable appearance due to clutter or very bright posters. Background blurring will help them feel more comfortable during the event.
The background blurring feature may be unavailable if your system does not meet the required performance parameters or is overloaded with CPU consuming processes.
To blur the background, take the following steps:
Go to the Settings → Audio and Video → Video section.
Click on the
button. You will immediately see the result in the preview window.
To disable background blurring, click on the 
button.
# Virtual background
If you want to hide your background, you can replace it with a virtual one. To do it, go to the Settings → Audio and Video → Video section and select any of the default images in the Virtual background sub-section.
In addition to using a virtual background, users can also blur their real background. Check the corresponding sub-section for more details.
If none of the default images suits you, it is possible to upload a custom image. In order to do it:
Click on the
button in the Virtual background section.In your operating system's file manager, select the desired image (supported formats: .jpg, .png, .svg, .jpeg, .gif, .jpe, .jif, .jfif, .jfi, .bmp, .webp) or video (supported formats: .mp4, .avi, .mov, .webm, .mkv).
If the .gif format is used as a background, only the first frame will be used, but not the entire animation.
The image that has been added will be displayed in the list and you will be able to set it as a virtual background.
When a virtual background has been added, you can change or delete it. In order to do it:
Hover the mouse cursor over the image added to the list of virtual backgrounds.
Click on the
button that will pop up.A context menu will be opened; here you will be able to change the image Change or delete it Delete.
To disable the virtual background, click on the button.
# Audio
To adjust settings for audio devices, go to the Audio subsection of Audio and Video. Here, you will be able to select playback and recording devices and set their volume level. Please note that you will be able to select different devices for notification sounds and conference audio.
Additional settings are available in the Recording device section (below the menu for selecting the microphone):
Echo cancellation
Automatic gain control.
Noise suppression
Enable diagnostics audio dump which may be helpful when sending log files to our technical support.
Audio dump files like other application log files are not deleted automatically, So, if the box Enable diagnostics audio dump is checked, the folder with audio dumps will grow in size in the long term.
These options are automatically enabled, and they are helpful in most cases. However, if you use a recording device with integrated echo cancellation/AGC mechanisms, we recommend disabling these options in the application to avoid conflicts between algorithms.
# Noise suppression
Starting from client application version 8.5, you will have the option to select a noise suppression mode.
In earlier versions, the noise reduction mode was aligned with the rating of your device — relatively high-performance devices had access to advanced external noise suppression mechanisms, while only a balanced mode was selected on less powerful devices to conserve resources.
To activate the mode selection feature, you need to check the Noise suppression checkbox, and then select one of the three options from the drop-down menu:
Automatic. When this option is selected, the active noise suppression mechanism will be chosen based on your device's performance level – for relatively powerful devices, Enhanced will be enabled, and for less powerful devices, Standard will be used.
Standard. Moderate noise suppression, suitable for low-performance devices. This mode can eliminate less intense noises, such as the sound of a passing car or distant barking, or muffle loud noises, like the sound of neighbors doing renovations.
Enhanced. The most effective of all types, however, it will put a slightly higher load on the device's processor. In this mode, any noise, such as the sound of a drill, can be suppressed.
# Echo Cancellation
To activate echo cancellation, check the corresponding checkbox.
For the echo cancellation algorithm to work properly, you can run an audio test and identify a possible delay. To do this, click Estimate at the bottom of the window.
During the testing, you will hear several audio signals from the selected playback device. When the test is successfully completed, the time of delay will be displayed.
You can run the audio test again by clicking the Restart button, which will replace the Estimate button after the first successful testing.
The Control app with HID device buttons checkbox allows users to control the application with the hardware buttons on a speakerphone or headset.
# Quick audio and video settings
You can also configure video devices in the Contacts section (where the video from your camera is displayed). The settings menu can be found in the lower right corner of your video area.
