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• Using ffmpeg to record 15 minute segments of a live audio stream

  6 août 2015, par David

  I currently have a code setup to record a live streaming audio file from a given url to an mp3 file until I terminate the program.

  fmpeg(obj.url)
  
  .noVideo()
  
  .format('mp3')
  
      .on('error', function(err, stdout, stderr) {
  
      console.error(err);
  
      console.error(stdout);
  
      console.error(stderr)
  
    })

  I already have it set up so that it will create a new file every time the ffmpeg is called. All I need is a way to have ffmpeg stop, and then start again, every 15 minutes.

  I know duration will stop it after 15 minutes, but I don’t know of anything that will start the same ffmpeg file again after this.

• how to stream live videos with no latency (ffplay, mplayer) and what kind of wrapper could be used with ffplay ?

  10 juin 2015, par user573014

  I have been testing playing multiple live streams using different players because I wanted to get the lowest latency value. I tried gstreamer player (gst-launch-0.01), mplayer, totem and ffmpeg player (ffplay). I used different configuration values to get the lowest latency for each of them for example :

  ffplay -fflags nobuffer 
  
  mplayer -benchmark

  The protocol I am streaming with is udp and I am getting a better values with ffplay than mplayer or gst-launch. To be honest, I don’t know what kind of configuration I need to do it the gstreamer to get a lower latency.
  Now, what I need is two things :

  1. I would like to know if someone has a better suggestion about streaming a live stream with lower latency < 100 ms. I am now getting higher than 100 ms which is not really efficient for me.

  2. Since I am using ffplay currently, because it is the best so far. I would like to do a simple gui with a play and record button and 3 screens to stream from different video servers, I just don’t know what kind of wrapper (which should be really fast) to use !

• How to eliminate the distortion in live streaming Nodejs + ffmpeg

  16 août 2015, par hackmith

  I tried Live video Streaming with NodeJS and ffmpeg encoder. It works with a lag of around 2sec and with a distortion as well. Lag does not matter as there is always. But I need to eliminate the video distortion as much as possible. So what would be the suitable bit rates and is there a better encoder to do this ? In ffmpeg, it encodes to mpegts so is there a more preferable format than mpegts ? plz help

  my encoding code was

  ffmpeg -s 640x480 -f dshow -i video="HP HD Webcam":audio="Microphone (Realtek High Definition Audio)" -preset ultrafast -qp 0 -f mpegts -v:b 800 -r 100 http://localhost:8082/abc/640/480/