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Streaming Display Lags

Dustin Vietzke

May 30, 2019 15:04

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I have a NodeJS webpage that I am trying to stream the display of and I have it working but the video lags behind a good 4-10 seconds and sometimes seems to not update at all. I have my laptop and XT1143 running locally without much other network traffic. Any ideas on how this can be improved?

I tried lowering the display to 720p30 from 1080p30 without much difference. The vbitrate is set to 2000.

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2 comments

• 0
  
  Bryan Crotaz June 25, 2019 11:23

  I'm trying to do the same thing - how did you set it up to stream the webpage?

• 0
  
  Dustin Vietzke June 25, 2019 13:23

  Leveraging the documentation and Github repo, I came up with code below. It stores the media server in the global 'm' variable as well as returning if you want to store it in a localized variable.

  https://docs.brightsign.biz/display/DOC/roMediaServer
  https://docs.brightsign.biz/display/DOC/roMediaServer
  https://github.com/brightsign/BrightAuthor-Plugins/tree/master/Media-Server

   

  Function createMS(port% asinteger) asObject

  
  

      'LogMessage("createMS() m.mediasrvr: " + type(m.mediasrvr))

      iftype(m.mediasrvr) <>"roMediaServer"then

          m.mediasrvr =createobject("roMediaServer")

      endif

      ms = m.mediasrvr

      'LogMessage("createMS() ms: " + type(ms))

      if ms <>invalidthen

          addr ="http:port="+ port%.tostr()

          LogMessage("createMS() addr: "+ addr)

          ms.start(addr)

  
  

          pipleline$ ="display:mode=1&vformat=1080p30&vbitrate=2000,encoder:,"

          address$ ="mem:/display"

          'LogMessage("createMS() strmr: " + type(strmr))

          iftype(strmr) <>"roMediaStreamer"then

              strmr =CreateObject("roMediaStreamer")

          endif

          'LogMessage("createMS() strmr: " + type(strmr))

          if strmr <>invalidthen

              strmr.reset()

              strmr.SetPipeline(pipleline$+address$)

              strmr.start()

          else

              LogMessage("createMS() Failed to create Display Streamer...")

          endif

      else

          LogMessage("createMS() Failed to create Media Server...")

      endif

  
  

      return ms

  End Function