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• 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.

  

• 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.

• Thumbnail is not generated while uploading a video which is downloaded from the same server

  16 avril 2014, par nit3ch

  I am using drupal 7 video module and ffmpeg together to upload video on my site.
  My problem :

  1. Upload a video, everything works fine, thumbnail is generated and video is uploaded successfully
  2. Now download the above uploaded video.
  3. Now Try to upload the same video, on same drupal site.

  Thumbnail is not generating and also I am not able to play the newly uploaded video.
  In all other cases video upload is working fine, I am able to upload same video again and again with no fuss,but when I try to upload the downloaded video , everything goes wrong even if I change the file name after downloading the video and uploading again.

  Please let me know if I am not clear, will try to explain more.