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• RTMP streaming without flash and low latency

  4 juin 2020, par Ruben Sanchez Castellano

  I have a server that currently streams out RTMP media and I need to play it with minimum delay (2-3 seconds).
Now I'm using CRTMPServer to consume the stream but, since there is no RTMP player without flash dependency, this solutions does not work for me because I need to play it embedded into a web page.

  



  At this point, I tried Nimble Streamer but I only could consume HLS, DASH and SLDP. HLS and DASH has 10 second delay so I discard these approaches.
SLDP has low latency but is a closed protocol and there is only one player (closed but freeware).

  



  On the other hand, there is RTSP but there are no HTML5 players for it. But I couldn't consume RTSP streams from Nimble neither.

  



  Any other ideas ?

  


• FFmpeg progress track visual C++

  15 août 2019, par jAckOdE

  In my main process, i create a ffmpeg child process using CreateProcess(...).
  I need to track the status of converting progress to update a progress bar. To do it, I read text from ffmpeg output and extract progress status from it.

  I make a sample programm like this :

  HANDLE rPipe, wPipe;
  
  CreatePipe(&rPipe,&wPipe,&secattr,0);
  
  
  
  STARTUPINFO sInfo; 
  
  ZeroMemory(&sInfo,sizeof(sInfo));
  
  PROCESS_INFORMATION pInfo; 
  
  ZeroMemory(&pInfo,sizeof(pInfo));
  
  sInfo.cb=sizeof(sInfo);
  
  sInfo.dwFlags=STARTF_USESTDHANDLES;
  
  sInfo.hStdInput=NULL; 
  
  sInfo.hStdOutput=wPipe; 
  
  sInfo.hStdError=wPipe;
  
  
  
  // pStr contain ffmpeg command
  
  CreateProcess(0,(LPTSTR)pStr,0,0,TRUE,NORMAL_PRIORITY_CLASS|CREATE_NO_WINDOW,0,0,&sInfo,&pInfo);
  
  CloseHandle(wPipe);
  
  
  
  BOOL ok;
  
  do
  
  {
  
      memset(buf,0,bufsize);
  
      ok=::ReadFile(rPipe,buf,100,&reDword,0);
  
      result += buf;            
  
  }while(ok);

  But I couldnt get "result" interactively updated. My app is held during conversion, and "result" string update only after ffmpeg’s process finish.

  How can I have my main process and ffmpeg’s run simultaneously, and interactively read from/write to ffmpeg process’s output/input ?

  Thanks for your time !

  LRs

• Can someone help me to install the netflix's VMAF library in Ubuntu

  20 février 2023, par peter12

  First of all, I have to say that I am not very experienced in ubuntu.
I would like to install this library to use with FFMPEG.

  



  I am following these steps, but I can manage to install it well...

  



  https://github.com/Netflix/vmaf/blob/master/resource/doc/VMAF_Python_library.md

  



  Could someone tell me what are the exact steps (commands) that I have to follow.

  



  On the other hand, someone knows if there are other metrics that can ffmpeg calculates directly (apart from PSNR or SSIM) ?

  



  Many thanks