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• Stream audio from STDIN through VLC for SDR

  13 décembre 2018, par doghousedean

  I’m trying to get an audio stream from a Raspberry pi 2 to my windows desktop.

  The RTL SDR on my pi is great when using spyserver but there are some certain applications that cannot connect to it, echoes the meteor detector for example

  Streaming the audio from the pi to my desktop could work with the stereo mixer input device

  My idea is to use VLC but cannot figure it out

  $ rtl_fm -f 143.050 -M wbfm -s 180k -E deemp | cvlc - -v --sout '#standard{access=http,mux=ogg,dst=localhost:8080}'
  
  VLC media player 3.0.3 Vetinari (revision 3.0.3-1-0-gc2bb759264)
  
  Found 1 device(s):
  
    0:  Realtek, RTL2838UHIDIR, SN: 00000001
  
  
  
  Using device 0: Generic RTL2832U OEM
  
  [01d919d8] dbus interface error: Failed to connect to the D-Bus session daemon: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
  
  [01d919d8] main interface error: no suitable interface module
  
  [01d14938] main libvlc error: interface "dbus,none" initialization failed
  
  [01d92be8] main interface error: no suitable interface module
  
  [01d14938] main libvlc error: interface "globalhotkeys,none" initialization failed
  
  [01d92c50] dummy interface: using the dummy interface module...
  
  [73a01670] http access out warning: "localhost" HTTP host might be ignored in multiple-host configurations, use at your own risks.
  
  [73a01670] http access out: Consider passing --http-host=IP on the command line instead.
  
  [73a02dd0] mux_ogg mux: Open
  
  Found Rafael Micro R820T tuner
  
  Tuner gain set to automatic.
  
  [R82XX] PLL not locked!
  
  Tuned to 286143 Hz.
  
  Oversampling input by: 6x.
  
  Oversampling output by: 1x.
  
  Buffer size: 7.59ms
  
  Exact sample rate is: 1080000.025749 Hz
  
  [R82XX] PLL not locked!
  
  Sampling at 1080000 S/s.
  
  Output at 180000 Hz.
  
  [73a070b8] ps demux warning: this does not look like an MPEG PS stream, continuing anyway
  
  [73a070b8] ps demux warning: garbage at input from 509, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 89140, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 195382, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 279916, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 326867, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 434452, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 438851, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 454391, trying to resync...
  
  [73a070b8] ps demux warning: found sync code
  
  [73a070b8] ps demux warning: garbage at input from 547348, trying to resync...

  I figured I could send the rtl_fm output to ffmpeg and then to vlc but I just can’t figure out the options I need.

  $ rtl_fm -f 143.050 -M wbfm -s 180k -E deemp | ffmpeg -acodec pcm_u8 -f oga - | vlc - -I dummy --sout '#standard{access=http,mux=ogg,dst=localhost:8080}'

  This gives similar output to above with the differences below

  Output #0, oga, to 'pipe:':
  
  Output file #0 does not contain any stream
  
  Signal caught, exiting!
  
  
  
  User cancel, exiting...
  
  [739070b8] mjpeg demux error: cannot peek
  
  [73c00520] main input error: Your input can't be opened
  
  [73c00520] main input error: VLC is unable to open the MRL 'fd://0'. Check the log for details.
  
  [73902dd0] mux_ogg mux: Close

• Nginx not starting after changing config file for live streaming purpose (Windows 10)

  2 décembre 2018, par Mohammad Ali Zinnah

  When I run the nginx.exe then it start a black screen and stay that

  Black Screen show

  I am new to nginx and ffmpeg

  I am tring it but failed

  Windows 10

  nginx 1.7.11.3 Gryphon.zip

  I Tried in cmd nginx -t and get positive

  Here is my config file

  daemon off;
  
  
  
  error_log logs/error.log debug;
  
  
  
  events {
  
      worker_connections 1024;
  
  }

  RTMP Server and Transcoding

  rtmp {
  
      server {
  
          listen 1935;
  
          chunk_size 4000;
  
  
  
          application stream {
  
              live on;
  
  
  
              exec ffmpeg -i rtmp://localhost:1935/stream/$name
  
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 2500k -f flv -g 30 -r 30 -s 1280x720 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_720p2628kbs
  
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 1000k -f flv -g 30 -r 30 -s 854x480 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_480p1128kbs
  
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 750k -f flv -g 30 -r 30 -s 640x360 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_360p878kbs
  
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 400k -f flv -g 30 -r 30 -s 426x240 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_240p528kbs
  
                -c:a libfdk_aac -b:a 64k -c:v libx264 -b:v 200k -f flv -g 15 -r 15 -s 426x240 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_240p264kbs;
  
          }
  
  
  
          application hls {
  
              live on;
  
              hls on;
  
              hls_fragment_naming system;
  
              hls_fragment 5s;
  
              hls_path /opt/data/hls;
  
              hls_nested on;
  
  
  
              hls_variant _720p2628kbs BANDWIDTH=2628000,RESOLUTION=1280x720;
  
              hls_variant _480p1128kbs BANDWIDTH=1128000,RESOLUTION=854x480;
  
              hls_variant _360p878kbs BANDWIDTH=878000,RESOLUTION=640x360;
  
              hls_variant _240p528kbs BANDWIDTH=528000,RESOLUTION=426x240;
  
              hls_variant _240p264kbs BANDWIDTH=264000,RESOLUTION=426x240;
  
          }
  
      }
  
  }
  
  
  
  **HTTP Server**
  
  
  
  http {
  
      server {
  
          listen 80;
  
  
  
          location /hls {
  
              types {
  
                  application/vnd.apple.mpegurl m3u8;
  
                  video/mp2t ts;
  
              }
  
              root /opt/data;
  
              add_header Cache-Control no-cache;
  
              add_header Access-Control-Allow-Origin *;
  
          }
  
  
  
          location /live {
  
            alias /opt/data/hls;
  
            types {
  
                application/vnd.apple.mpegurl m3u8;
  
                video/mp2t ts;
  
            }
  
            add_header Cache-Control no-cache;
  
            add_header Access-Control-Allow-Origin *;
  
          }
  
  
  
          location /stat {
  
              rtmp_stat all;
  
              rtmp_stat_stylesheet static/stat.xsl;
  
          }
  
  
  
          location /static {
  
              alias /www/static;
  
          }
  
  
  
          location = /crossdomain.xml {
  
              root /www/static;
  
              default_type text/xml;
  
              expires 24h;
  
          }
  
      }
  
  }

  I copied this file from internet so feel free to advice me to edit file
  I dont no what my error is . Please Help me

• ffmpeg posting to nginx hangs after 90 minutes

  22 octobre 2018, par Harnek Gulati

  I’m using a very simple program to push an ffmpeg stream from my raspberry pi camera to a nginx server. However, it fails after 90 minutes, with almost every single Raspberry Pi I use (I have this code on 12 Raspberry Pis).
  Here is my ffmpeg command :

  raspivid -o - -t 0 -w 640 -h 480 -fps 25 | ffmpeg -re -i - -vcodec copy -hls_time 4 -f hls -hls_list_size 5 -hls_wrap 5 -threads 0  -timeout 5000 -max_reload 20000 -method PUT http://{}:{}/live/{}

  And here is my configuration for nginx.conf :

  #user nobody;
  
  load_module /usr/lib/nginx/modules/ndk_http_module.so;
  
  load_module /usr/lib/nginx/modules/ngx_http_lua_module.so;
  
  
  
  worker_processes auto;
  
  env CONTROL_SERVER_IP;
  
  
  
  
  
  #error_log /var/log/nginx/error.log;
  
  error_log /dev/stdout info;
  
  events {
  
      worker_connections 1024;
  
  }
  
  
  
  http {
  
      include     mime.types;
  
      default_type    application/octet-stream;
  
      access_log /dev/stdout;
  
      sendfile on;
  
      keepalive_requests 100000;
  
      keepalive_timeout 30;
  
  
  
    client_max_body_size 10M;
  
    server {
  
      listen 80;
  
      server_name localhost;
  
  
  
      location /live {
  
        root /var/static;
  
              client_body_temp_path   /var/static/client_temp;
  
  
  
              dav_methods PUT;
  
              create_full_put_path on;
  
              dav_access user:rw  group:r     all:r;
  
  
  
              types {
  
                  application/vnd.apple.mpegurl m3u8;
  
              }
  
  
  
              # Disable Cache
  
              add_header Cache-Control no-cache;
  
              include cors.conf;
  
    }
  
    }
  
  }
  
  
  
  daemon off;

  If anyone can help me, I would deeply appreciate it. I’ve been pulling my hair out trying to figure out this bug. On the raspberry pi, it hangs on this :

  [hls @ 0x25a8c90] Opening 'http://192.168.8.1:80/live/c35d8935-0a31-4d22-b71a-ad3f4f1d47631.ts' for writing
  
  frame=105609 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105518 speed=1.02xframe=105623 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105532 speed=1.02xframe=105636 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105545 speed=1.02xframe=105648 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105557 speed=1.02xframe=105662 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105571 speed=1.02xframe=105674 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105583 speed=1.02xframe=105688 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105597 speed=1.02xframe=105700 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105609 speed=1.02xframe=105714 fps= 25 q=-1.0 q=1.6 size=N/A time=01:11:40.00 bitrate=N/A dup=0 drop=105623 speed=1.02x[hls muxer @ 0x25a9200] Duplicated segment filename detected: c35d8935-0a31-4d22-b71a-ad3f4f1d47631.ts
  
  [hls @ 0x25a8c90] Opening 'http://192.168.8.1:80/live/c35d8935-0a31-4d22-b71a-ad3f4f1d47632.ts' for writing

  And on the nginx logs, I get :

  192.168.10.242 - - [21/Oct/2018:22:34:01 +0000] "PUT /live/c35d8935-0a31-4d22-b71a-ad3f4f1d4763.m3u8 HTTP/1.1" 204 0 "-" "Lavf/57.83.100"
  
  192.168.10.242 - - [21/Oct/2018:22:35:04 +0000] "PUT /live/c35d8935-0a31-4d22-b71a-ad3f4f1d47633.ts HTTP/1.1" 408 0 "-" "Lavf/57.83.100"

  I need to set up a way to either a) keep consistent connections longer than 90 minutes or b) detect when the 408 error happens and stop it from hanging.

  FFMPEG version : 3.4.1