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1. The streams indicated on the Advanced settings tab of the Camera object are selected (all streams that are not disabled).
2. From the streams chosen during the previous step, the streams that have a resolution greater than the resolution requested by the Client are selected. If no such streams exist, the streams with the highest resolution are selected.

3. From the streams chosen during the previous step, the streams that have a frame rate higher than the frame rate requested by the Client are selected. If no such streams exist, the streams with the highest frame rate are selected.

   Info
   title Note.
   The requested frame rate is specified during selection and configuration of cameras for the Monitor interface object, in the fps column on the List of cameras tab (see the section Selecting and configuring video cameras).

   
   

4. If multiple streams were selected during the previous steps, the stream among these that has the highest bitrate is selected.

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If a stream is selected because it has the highest bitrate, another stream will be selected only if the new stream's bitrate is higher than the current bitrate by more than 5% (to avoid constant back-and-forth switching when bitrates are approximately equal).
When video stream properties change, a decision to display a different stream is made only if confirmation for making a change is received within 35 seconds. This feature is also designed to avoid constant back-and-forth switching between video streams.

If automatic stream selection is enabled, selection will be performed for the cameras for which the Default video stream has been selected.

Any stream can be forbidden for display using the block_stream registry key (see Registry keys reference guide).

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