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• Retranslating video stream using ffmpeg

  6 mai 2014, par zdimon77

  I want to redirect video stream from rtmp to hls format using nginx rtmp-module.

  This my nginx config

      server {
  
      exec_options on;
  
      listen 1936;
  
      chunk_size 4000;
  
  
  
  
  
      application myapp {
  
       live on;
  
       exec /usr/bin/avconv -loglevel verbose -re -i rtmp://localhost:1936/myapp/$name -vcodec libx264 -vprofile baseline -acodec libmp3lame -ar 44100 -ac 1 -f flv rtmp://localhost:1935/hls/$name;
  
  
  
  
  
  }
  
  
  
  
  
  }
  
  
  
  server {
  
  
  
     listen 1935;
  
      chunk_size 4000;
  
  
  
      application hls {
  
          live on;
  
          hls on;
  
          hls_path /tmp/hls;
  
      }
  
  
  
  
  
  
  
  }

  But it doesnt work.
  When I try to publish my stream in console (without exec command in nginx.conf)

  ffmpeg -loglevel debug -re -i rtmp://localhost:1936/myapp/test -vcodec libx264 -vprofile baseline -acodec libmp3lame -ar 44100 -ac 1 -f flv rtmp://localhost:1935/hls/test

  I see this in console

  root@dcv23 :/usr/share/nginx/html# avconv -i rtmp ://localhost:1935/myapp/testname -vcodec copy -an -f flv rtmp ://localhost:1936/hls/testname

  avconv version 0.8.10-6:0.8.10-1, Copyright (c) 2000-2013 the Libav developers

  built on Feb 5 2014 17:15:30 with gcc 4.7.2

  [flv @ 0x98a3800] invalid stream

  [flv @ 0x98a3800] Estimating duration from bitrate, this may be inaccurate

  Input #0, flv, from ’rtmp ://localhost:1935/myapp/testname’ :

  Duration : N/A, start : 448.536000, bitrate : N/A

  Stream #0.0: Audio: nellymoser, 8000 Hz, mono, s16
  
  
  
  Stream #0.1: Video: flv, yuv420p, 800x600, 1k tbr, 1k tbn

  Output #0, flv, to ’rtmp ://localhost:1936/hls/testname’ :

  Metadata :

  encoder         : Lavf53.21.1
  
  
  
  Stream #0.0: Video: flv, yuv420p, 800x600, q=2-31, 1k tbn, 1k tbc

  Stream mapping :

  Stream #0:1 -> #0:0 (copy)

  Press ctrl-c to stop encoding

  ^Cframe= 200 fps= 7 q=-1.0 Lsize= 1031kB time=35.44 bitrate= 238.2kbits/s

  And process going but m3u8 files dont create.
  Can someone help me please ?
  Thank you.

• Node.js Stream Mp3 to http without having to save file

  21 août 2016, par user2758113

  I am trying to stream just audio from a youtube link straight to http with node.js.

  My code looks like this, I am using express 4.0.

  var express = require('express');
  
  var router = express.Router();
  
  var ytdl = require('ytdl');
  
  var ffmpeg = require('fluent-ffmpeg');
  
  var fs = require('fs');
  
  
  
  router.get('/', function(req, res) {
  
  
  
    var url = 'https://www.youtube.com/watch?v=GgcHlZsOgQo';
  
    var video = ytdl(url)
  
  
  
    res.set({
  
        "Content-Type": "audio/mpeg"
  
    })
  
  
  
    new ffmpeg({source: video})
  
        .toFormat('mp3')
  
        .writeToStream(res, function(data, err) {
  
          if (err) console.log(err)
  
        })
  
  
  
  });
  
  
  
  module.exports = router;

  Now, I’m able to stream the video’s audio to the response if I save the file then pipe it to the response, but I’d rather try to figure out some way to go from downloading to ffmpeg to response.

  Not sure if this is possible. The main goal is to keep it as light weight as possible, and not have to read from files.

  I’ve seen this code which is essentially what I’d like to do minus the saving to a file part.

  

• AVI video streaming over internet with FFMPAG/AVCONV or NGINX RTMP servers

  20 mai 2014, par Emmanuel Brunet

  I’ve got a general question regarding video streaming, FFMPEG/AVCONV and RTMP.

  I’ve read a lot of posts since several days to find out how to stream video over internet. But no answer fit my needs. I found examples with.mp4 to web/flv conversion .. and so on but none that works withe AVI real time video streaming.

  I need a straightforward example to put this in place.

  How to set up AVI video streaming over internet with much browser compatibility as possible using ffmpeg/avconv on debian / ubuntu and if possible the NGINX RTMP server ?

  I’ve set up an NGINX-1.70 server on debian (but could use another one), added the RTMP module configured with only the basic examples and I’d like to use FFMPEG (avconf) to convert AVI videos on the fly and make them available for streaming over internet (in a format that can be displayed by a wide range of browsers).

  Up to now, I understand that I need to setup a streaming server (ffmpeg/avconv server ?) or NGINX (my favorite), to convert videos on the fly with a bunch of horrible ffmpeg options and connect the output stream to the streaming server. That’s all ... still a long way to go to work out what I’m expecting !

  How can I do that ?

  Thanks for your help