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An increase in compression rate leads to video degradation. Axxon PSIM software PSIM compresses video right after it is digitized by the video capture card before recording and/or transmitting it via the network to the Remote Workstations.

Set the video compression rate for each camera individually.

Axxon PSIMsoftware uses the  uses the Quality setting for the compression rate parameter, which is reverse to the compression rate.

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1. Go to the Hardware tab in the System settings window.
2. Select the Camera object created before in the objects tree, which corresponds to the adjusted camera.
3. Go to the Basic settings tab on the settings panel of the Camera object.
   

4. To improve the video quality, move the Recording quality slider to the max position. To reduce the size of the video stream from the camera, move the Recording quality slider to the min.

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   title Note
   Use the viewing field video area to estimate video quality enhancement or degradation.

5. Click the Apply button.

Key frame rate settings

Axxon PSIMsoftware uses  uses the Motion Wavelet algorithm for video processing and compression. Processed by this algorithm, the video is the sequence of key and delta frames. A key frame is a full frame of an image. A delta frame (differential frame) is an image containing only pixel blocks that differ from the previous key frame.

Motion Wavelet algorithm guarantees consistency of video quality regardless of key frame rate. With an increase in motion intensity in a frame, the size of the delta frame increases, and the quality of video remains unchanged. With very intense motion (more than 70% of the frame is engaged), the setting of key frame rate is ignored, and every frame is processed as a key frame. 

Axxon PSIMsoftware sets  sets the optimal frame rate value by default: every eight frame is processed as a key frame. If there are no special requirements to video size and quality, we recommend keeping the default key frame rate.

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Setting the delta frame creation criterion

Axxon PSIM software uses the Motion Wavelet algorithm for video processing and compression.

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The optimal value of the parameter that sets the criterion for including blocks in a delta frame is defined determined by the brightness gradient of the video background and moving objects in a frame. You can increase the parameter value with a high gradient and decrease the parameter value with a low gradient.

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