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DM8148 Video outputs

Bryan Busacco
Expert 1215 points
Other Parts Discussed in Thread: THS8200, THS8136

In our DM8148 application we would like to output video on the HDMI and analog output simultaneously.

 

1) Can the analog output be configured to support NTSC, RGB?

1) can the HDMI and analog output support different resolutions at the same time? For example 1080P on HDMI and 720p on the analog output?

2) If the answer to number 2 is no, then1 what happens to the analog output when outputting full 1080P on the HDMI output? I suspect that since we would be exceeding the capability of that output, it would basically output garbage?

 

Thank you,

 

Bryan Busacco.

 

 

 

  • 0
    TI__Mastermind 43875 points

    Bryan,

    The 814x does not have an analog output other than CVBS (NTSC or PAL), only the 816x has the analog component DACs integrated (to support RGB VGA or YPbPy component video).

    If you want analog RGB/YPbPr and HDMI then you will need to add an external triple DAC such as the THS8200 or THS8136.

    These DACs can be connected to the DVO ports and, depending on which port you connect to, can support either mirrored output and/or completely different outputs.

    The CVBS DAC can support completely different output to the HDMI output though.

    BR,

    Steve

  • 0 in reply to Steve Clynes
    Prodigy 190 points 
    Hey ,

    i'm using this line to do capture from DM8148 , i'm streaming the capture data into windows pc .

    streaming line is :

    gst-launch v4l2src device="/dev/video0" always-copy=false queue-size=12 num-buffers=2000 ! 'video/x-raw-yuv-strided,format=(fourcc)NV12,width=1280,height=720,framerate=(fraction)25/1' ! omxbufferalloc numBuffers=12 ! omx_h264enc bitrate=5000000 ! gstperf ! h264parse output-format=0 ! rtph264pay ! udpsink host=192.168.16.106 port=5000

    receiving line is :

    gst-launch-0.10 udpsrc port=5000 ! 'application/x-rtp, media=(string)video, clock-rate=(int)90000, payload=(int)96' ! rtph264depay ! ffdec_h264 ! xvimagesink sync=false

    the receiving line works great on linux system , but on windows system it doesn't
    

    

    any help ?
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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