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• Muxing in audio to gstreamer RTMP stream kills both video and Audio

  1er avril 2015, par Adam

  I need some genius help here - I’m trying to set up a live stream for my upcoming wedding... and I have it ALMOST working - audio seems to be the problem.

  This is my setup

  • Raspberry Pi Model B+
  • Logitech C920 (with onboard h264 encoding that I am utilising)
  • on-camera (C920) microphone
  • USB wifi to iPhone 4G connection
  • gstreamer1.0
  • Amazon EC2 Wowza RTMP server

  I have it all set up, but as soon as I mux in the audio, the streams wont play by any player.

  What Works :
  - my gstreamer pipeline WITHOUT the audio muxed in
  - Wowza receives a consistent stream, no failures
  - The various Flash players / iOS / Android and VLC all play back the video

  What doesnt :
  - enabling audio in the mux (using the pipeline below)
  - BUT gstreamer doesnt complain
  - BUT Wowza receives a consistent stream, no failures
  - The various flash players fail to play both Audio and Video. some just display the first video frame
  - VLC plays 1 video frame, and about 100ms of audio, then stops

  Ideally I’d like the muxed audio/video FLV stored on the SD card too in case the network goes down - but if the ’tee’ needs to be sacrificed to make it work, so be it.

  This is my current FAILING pipeline - I assume there’s something really stupid in it because I know practically nothing about gstreamer.... The first frame loads in all the players (except iOS.. which never shows anything)

  # set camera resolution to 720p, and the data format to H264 (alternatives are YUV and JPG)
  
  v4l2-ctl --device=/dev/video0 --set-fmt-video=width=1280,height=720,pixelformat=1
  
  # set the frame rate
  
  v4l2-ctl --device=/dev/video0 --set-parm=10
  
  
  
  gst-launch-1.0 -v -e uvch264src initial-bitrate=300000 average-bitrate=300000 device=/dev/video0 name=src auto-start=true src.vidsrc \
  
                  ! queue \
  
                  ! video/x-h264,width=1280,height=720,framerate=10/1 \
  
                  ! h264parse \
  
                  ! flvmux streamable=true name=mux \
  
                  ! queue \
  
                  ! tee name=t \
  
                  ! queue \
  
                  ! filesink location=/home/pi/wedding.flv t. \
  
                  ! queue \
  
                  ! rtmpsink location='rtmp://wowzaserver/live/wedding live=1' >>/home/pi/wedding.log 2>&1

  Some of the things I can’t really afford to change at this late stage are the encapsulation (FLV) and wowza RTMP because I’ve built everything around that...

  Please Help !! Thanks !

  UPDATE

  Given that I am also saving the FLV file, I have found that if I use ffmpeg to send that FLV file (using audio copy, video copy) to the RTMP server, everything works (but obviously its not live) ! So I am now starting to believe this is a problem with the way Gstreamer encapsulates RTMP - and by putting ffmpeg in the middle it fixes it... but it’s not live of course.
  Is it possible to pipe my output to ffmpeg and using ffmpeg’s RTMP ?

• 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.

• AWS Lambda making video thumbnails

  5 février 2017, par Jesus

  I want make thumbnails from videos uploaded to S3, I know how to make it with Node.js and ffmpeg.

  According to this forum post I can add libraries :

  ImageMagick is the only external library that is currently provided by
  default, but you can include any additional dependencies in the zip
  file you provide when you create a Lambda function. Note that if this
  is a native library or executable, you will need to ensure that it
  runs on Amazon Linux.

  But how can I put static ffmpeg binary on aws lambda ?

  And how can I call from Node.js this static binary (ffmpeg) with AWS Lambda ?

  I’m newbie with amazon AWS and Linux

  Can anyone help me ?