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• ffmpeg livestream from static image and audio

  23 mai 2017, par boygiandi

  I’m trying to livestream by ffmpeg using static image and audio file. The ffmpeg command like this

  ffmpeg -re -loop 1 -f image2 -i ’/tmp/11.jpg’ -f lavfi -i amovie=/tmp/5117.mp3:loop=999 -video_size 600x480 -c:v libx264 -x264-params keyint=60 -bufsize 500k -c:a aac -ar 44100 -b:a 128k -r 30 -g 60 -pix_fmt yuv420p -f flv "rtmp ://"

  /tmp/11.jpg was generated by another process and keep updated twice per second. The ffmpeg command doesn’t look right, first, it show status like this

  frame= 85 fps=9.4 q=29.0 size= 2261kB time=00:02:24.19 bitrate= 128.4kbits/s speed= 16x

  As you see, 16x is not good, 1x is the right value for livestream. Then, after a while, it show many warning log like this

  [flv @ 0x322bd60] Non-monotonous DTS in output stream 0:1 ; previous : 335993, current : 297752 ; changing to 335993. This may result in incorrect timestamps in the output file.

  Please help to fix it.

• PHP - How to track video conversion progress - Stop ffmpeg process in PHP web [closed]

  21 mai 2022, par Mursaleen Ahmad

  I am working on a PHP web project where multiple users will be able upload and convert their videos bitrate using ffmpeg. And if users go to watch page before full conversion then "Video is being processed" message should show up.
I am using jQuery with AJAX and a watch link generated to watch online.

  


  1) How can I find the process is still running and show "Video is being processed" message to the users ?

  


  2) How can I stop ffmpeg process ?

  


  3) How can I get conversion percentage (how much video is converted) from file (as multiple users are using the site so can't work on single file named output.txt) ?

  


• exec RTMP stream to HLS nginx server not working

  26 février 2019, par Serg Port

  I’m trying to convert an RMTP stream to HLS using ffmpeg in an nginx server
  This is my basic nginx configuration.
  If use push rtmp ://localhost/show/ instead of exec is saving data, but exec it’s not doing nothing.
  I can see the stream with ffplay,
  error —> RTMP_ReadPacket, failed to read RTMP packet header
  rtmp ://localhost/live/key : Invalid data found when processing input
  To test it I’m using OBS and ffplay

  #user  root;
  
  worker_processes  auto;
  
  
  
  
  
  events {
  
      worker_connections  1024;
  
  }
  
  
  
  
  
  # RTMP configuration
  
  rtmp {
  
      server {
  
          listen 1935; # Listen on standard RTMP port
  
          chunk_size 4000; 
  
  
  
          # This application is to accept incoming stream
  
          application live {
  
              live on; # Allows live input
  
  
  
              # Once receive stream, transcode for adaptive streaming
  
              exec ffmpeg -i rtmp://localhost/$app/$name -async 1 -vsync -1 -c:v libx264 -c:a libvo_aacenc -b:v 256k -b:a 32k -vf "scale=480:trunc(ow/a/2)*2" -tune zerolatency -preset veryfast -crf 23 -f flv rtmp://localhost/show/$name_low 2>>/tmp/ffmpeg.error; 
  
          }
  
  
  
          # This application is for splitting the stream into HLS fragments
  
          application show {
  
              live on; # Allows live input from above
  
              hls on; # Enable HTTP Live Streaming
  
  
  
              hls_path /mnt/hls/;
  
  
  
              # Instruct clients to adjust resolution according to bandwidth
  
              hls_variant _low BANDWIDTH=288000; # Low bitrate, sub-SD resolution
  
          }
  
      }
  
  }