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• ffmpeg - stream image and audio input

  30 octobre 2017, par Chad

  Goal

  Using a Raspberry Pi, stream audio in and use a static image as the video input thru ffmpeg over RTMP to a Cloud video provider (DaCast in this instance)

  Setup

  • Raspberry Pi 3 Model B
  • USB Audio Device (Sabrent USB External Stereo Sound Adapter)
  • Ubuntu MATE 16.04.2 (Xenial)
  • ffmpeg version 3.2-2+rpi1 xenial1.7 (I can post what is configured with the build, if needed)

  Question

  So far, I have figured out the right setting to stream the Raspberry Pi Camera v2 with the audio in. But can’t seem to get it right to replace the video input with a static image. This is that command :

  ffmpeg -f alsa -ac 1 -i plughw:1,0 -f v4l2 -s 1920x1080 -r 30 -input_format h264 -i /dev/video0 -vcodec copy -preset veryfast -r 15 -g 30 -b:v 64k -ar 44100 -threads 6 -b:a 96k -bufsize 3000k -f flv rtmp://streaming_server_url

  How can I replace the video input and replace with an image (or short video with no audio) ?

• Unknown directive "ffmpeg"

  5 février 2015, par AndroidBeginner

  I’m setting up Amazon AWS s2 Linux(non-AMI) and building up nginx and rtmp from scratch. I follow exactly tutorials at here. When I’m editing nginx.conf, adding ffmpeg and restart my nginx. Unknown directive "ffmpeg" occurs.

  Nginx.conf

  rtmp {
  
      server {
  
              listen 1935;
  
              chunk_size 4096;
  
              notify_method get;
  
  
  
              application live {
  
                      live on;
  
                      ffmpeg  -re -i /var/video/test.mp4 -c copy -f flv rtmp://locahost/live;
  
              }
  
      }

  }

  Way I start nginx :

  sudo /usr/local/nginx/sbin/nginx

  Way I stop :

  sudo /usr/local/nginx/sbin/nginx -s stop

  From what I knew, I need to recompile the nginx ? Because I’m using "sudo apt-get install nginx" when I start-up my VPS.

• Stream Recorder Using FFmpeg Fails on AWS Lambda

  10 mai, par user30495567

  I am trying to stream audio from URLs and save them to a file in S3 using AWS Lambda with FFmpeg. Here is an example FFmpeg command I'm using :

  


  ffmpeg -hide_banner -loglevel error -t 10 -i http://playerservices.streamtheworld.com/api/livestream-redirect/KTOOFMAAC_SC -ar 16000 -b:a 64k -ac 2 output.mp3


  


  

  • The FFmpeg command is getting called in a python script using subprocess.Popen()

  


  • The command works as expected on local, but does not work in an AWS Lambda python environment using a custom FFMPEG layer configured with these instructions.

  


  • When run on Lambda, I get the following error : FileNotFoundError : [Errno 2] No such file or directory : '/tmp/output.mp3'

  


  


  Note : I've also tried a version where I use python requests to stream chunks and pipe them into ffmpeg. This works for some stream URLs, but for others, such as the streamtheworld URL above, it only saves 5 seconds of audio from the stream or results in a Broken Pipe error.