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• How to produce Live video and audio streaming (not VoD) with ffmpeg ?

  22 novembre 2022, par Artem

  I want to produce a Live audio/video stream from local file.

  



  I tried the following :

  



  


  ffmpeg -re -thread_queue_size 4 -i source_video_file.ts -strict -2
 -vcodec copy -an -f rtp rtp ://localhost:10000 -acodec copy -vn -sdp_file saved_sdp_file -f rtp rtp ://localhost:20000

  


  



  and then :

  



  


  ffplay saved_sdp_file

  


  



  It seems to work fine, but it looks like a Video on Demand, cause I can replay this file with ffplay whenever I want.

  



  But I need ffplay to show video/audio only during ffmpeg streaming instance is running (the first command above).

  



  How do I achieve this ?

  



  Thanks !

  


• Live Stream Android Screen

  27 janvier 2012, par salamis

  I would like to stream Android Screen using FFMPEG and MonkeyRunners(MonkeyImage)

  I found a good Tutorial for streaming your webcam using FFMPEG and video4linux2.

  Is it possible to send the bytes from the Monkeyrunner.MonkeyImage to the FFMPEG to be converted to a live video stream ?

  Actual code :

  $ffmpeg -f video4linux2 -i /dev/video0 http://78.47.18.19:8090/cam1.ffm

  Replace it with something similar to :

  $ffmpeg -f video4linux2 -i <add here="here" python="python" stream="stream"> http://78.47.18.19:8090/cam1.ffm
  
  </add>

  Any suggestions ?

• NGinx RTMP live stream text overlay and play to multiple

  25 avril 2020, par chrisale

  I have been banging my head against this wall for a long time. Hoping you all can get me over.

  



  I have a live stream coming from an IP Camera to my computer.

  



  Nginx publishes to YouTube and to an FFmpeg stream that takes a frame every minute to use for a static webcam image.

  



  Here is the code with the exec_push that I've tried to use with no success. The YouTube stream and frame capture work fine. I have FFmpeg installed with freetype. This is all on MacOS X 10.15.4 Catalina with home-brew FFmpeg —HEAD installed.

  



  Update : I should also say I have tried outputting the overlay using command line FFmpeg and it works great with this command :

  



  /usr/local/bin/ffmpeg -i rtmp://localhost:1935/live/68.1. -vf drawtext="fontfile=/System/Library/Fonts/Supplemental/Arial.ttf:text='Stack Overflow': fontcolor=white: fontsize=24: box=1: boxcolor=black@0.5: boxborderw=5: x=(w-text_w)/2: y=(h-text_h)/2" /Users/user/Desktop/test.mp4


  



  So it seems that the output portion is the part FFmpeg doesn't like in Nginx.conf

  



  My thought is I should be passing the overlayed FFmpeg stream to the "overlay" app and have the stream published to Youtube and the frame capture from there. (And also potentially recorded).

  



  Thanks so much !

  



  Chris

  



  rtmp {
server {
                listen 1935;
                chunk_size 4096;

                application live {
                                    live on;
                                    record off;
                                    exec_static /usr/local/bin/ffmpeg -i rtmp://localhost:1935/live/68.1. -vf drawtext="fontfile=/System/Library/Fonts/Supplemental/Arial.ttf:text='Stack Overflow': fontcolor=white: fontsize=24: box=1: boxcolor=black@0.5: boxborderw=5: x=(w-text_w)/2: y=(h-text_h)/2" rtmp://localhost:1935/overlay/test;
                                    #push rtmp://localhost:1935/overlay;
                                    #exec ffmpeg -i rtmp://your_localhost_ip/live/test -crf 30 -preset ultrafast -acodec aac -strict experimental -ar 44100 -ac 2 -b:a 64k -vcodec libx264 -x264-params keyint=60:no-scenecut=1 -r 30 -b:v 500k -s 1280x720 -f flv rtmp://jp.pscp.tv:80/x/your_stream_key;
                }

                application overlay {
                                    live on;
                                    record off;
                                    push rtmp://a.rtmp.youtube.com app=live2 playpath=yjsh-402y-xv3k-2qdj;
                                    exec_push /usr/local/bin/ffmpeg -i rtmp://localhost:1935/overlay/$name -vf fps=1/60 /Users/Shared/stream/netcam.jpg;
                }

        }

}