I think that before this you need to solve retriving single image from an rtsp stream.
Check or post in this thread:

  

      github.com/flutter/flutter
  

  
    
  
	  
  

  
    
      RTSP (real time streaming) protocol in Flutter? 2
    

    
      
        opened 
        
          
        
        Dec 5, 2018
      
      

        
          closed 
        
          
        
        Dec 22, 2020
      
        

      
        
          
          weekaung
        
      
    

    
        
          severe: new feature
        
        
          plugin
        
        
          p: first party
        
        
          a: video
        
        
          customer: crowd
        
        
          p: video_player
        
        
          P6
        
    
  


  
    Hi Flutter Team,

Our company is developing an IoT Security solution which req…uires us to access live cameras using the rtsp protocol. On looking into the video_player plugin that you have developed, we realized that it does not support this protocol.

Will you be enabling this protocol in the near future? Or do you have a solution for our problem?
We would very much appreciate your help.

Thank you,
David Lee :>