Linux stack - Configuration guide
Setup Resources
Preparation
After each reboot of your machine run:
sudo systemctl start 5gmag-rt-modemsudo systemctl stop 5gmag-rt-modem
Make sure that you have the latest nginx config enabled in /etc/nginx/sites-enabled/5gmag-rt-wui. Compare it to the config that is provided here
Different SA formats
The 5G-MAG Reference Tools support three different service announcement formats. In the examples below we either use the 5gmag_legacy format for the recordings or the default format for seamless switching. To use the seamless switching format that was agreed in 5G-MAG you have to use 5gmag_bc_uc. The corresponding service announcement example file is labeled bootstrap.multipart.seamlessswitching.hls.5gmag. More details can be found in the Service Announcement Formats section.
Playback of 5GBC together with the MBMS Modem
Set the target configuration in etc/5gmag-rt-conf:
seamless_switching: {
enabled: <TRUE OR FALSE>;
truncate_cdn_playlist_segments: 3
}
bootstrap_format: <TARGET FORMAT>;
local_service: {
enabled: false
}
Playback of legacy recordings
Set the configuration in etc/5gmag-rt-conf to use the legacy format:
seamless_switching: {
enabled: false;
}
bootstrap_format: "5gmag_legacy";
local_service: {
enabled: false;
}
If you want to play the recorded content in a loop consider increasing the cache values to avoid segments with the same url being deleted immediately:
cache: {
max_segments_per_stream: 30;
max_file_age: 1200; /* seconds */
max_total_size: 128; /* megabyte */
}
FLUTE ffmpeg watchfolder with signaling server
HLS seamless switching
Set the config file for the rt-mbms-examples project in flute-ffmpeg\config\default.cfg to:
general : {
multicast_ip = "238.1.1.111";
multicast_port = 40101;
mtu = 1500;
rate_limit = 1200000;
watchfolder_path = "<PATH TO YOUR WEBSERVER WHERE HLS SEGMENTS ARE WRITTEN TO>";
path_to_transmit = "<RELATIVE PATH FROM THE ROOT OF YOUR WEBSERVER>"
stream_type = "hls";
transmit_service_announcement = true;
dash: {
number_of_init_segments = 3;
resend_init_in_sec = 30;
service_announcement = "../supporting_files/mbms/bootstrap_examples/bootstrap.multipart.legacy.dash";
};
hls: {
service_announcement = "../supporting_files/mbms/bootstrap_examples/bootstrap.multipart.seamlessswitching.hls";
media_playlists_to_ignore_in_multicast = []
}
webserver_port: 3010;
}
Note: For seamless switching to work the watchfolder_path needs to point to a webserver that hosts the segments.
Enable seamless switching in the etc/5gmag-rt-conf file:
seamless_switching: {
enabled: true;
truncate_cdn_playlist_segments: 3
}
DASH Broadcast
Disable seamless switching and set the right SA format in the etc/5gmag-rt-conf file:
seamless_switching: {
enabled: false;
truncate_cdn_playlist_segments: 3
},
bootstrap_format: "5gmag_legacy";
Adjust the config for flute-ffmpeg:
general : {
multicast_ip = "238.1.1.111";
multicast_port = 40101;
mtu = 1500;
rate_limit = 1200000;
watchfolder_path = "/home/dsi/5G-MAG/simple-express-server/public/watchfolder/dash";
path_to_transmit = ""
stream_type = "dash";
transmit_service_announcement = true;
dash: {
number_of_init_segments = 3;
resend_init_in_sec = 30;
service_announcement = "../supporting_files/mbms/bootstrap_examples/bootstrap.multipart.legacy.dash";
};
hls: {
service_announcement = "../supporting_files/mbms/bootstrap_examples/bootstrap.multipart.seamlessswitching.hls";
media_playlists_to_ignore_in_multicast = []
}
webserver_port: 3010;
}
HLS Broadcast
Disable seamless switching and set the right SA format in the etc/5gmag-rt-conf file:
seamless_switching: {
enabled: false;
truncate_cdn_playlist_segments: 3
},
bootstrap_format: "5gmag_legacy";
Adjust the config for flute-ffmpeg:
general : {
multicast_ip = "238.1.1.111";
multicast_port = 40101;
mtu = 1500;
rate_limit = 1200000;
watchfolder_path = "/home/dsi/5G-MAG/simple-express-server/public/watchfolder/hls";
path_to_transmit = "watchfolder/hls/"
stream_type = "hls";
transmit_service_announcement = true;
dash: {
number_of_init_segments = 3;
resend_init_in_sec = 30;
service_announcement = "../supporting_files/mbms/bootstrap_examples/bootstrap.multipart.legacy.dash";
};
hls: {
service_announcement = "../supporting_files/mbms/bootstrap_examples/bootstrap.multipart.legacy.hls";
media_playlists_to_ignore_in_multicast = []
}
webserver_port: 3010;
}
FLUTE ffmpeg with local Service Announcement
In this example we dont need the http server that signals the mch_info.json. Instead, we start the MBMS Middleware directly with a local service announcement file
General
Enable the local service in the etc/5gmag-rt-conf file:
local_service: {
enabled: true;
}
Disable transmit_service_announcement in the flute-ffmpeg default.cfg file:
transmit_service_announcement = false;
HLS seamless switching
Point to a local service announcement file with seamless switching support in the etc/5gmag-rt-conf file e.g.:
local_service: {
bootstrap_file: "/home/dsi/5G-MAG/rt-common-shared/mbms/bootstrap_examples/bootstrap.multipart.seamlessswitching.hls";
}
Enable seamless switching in the etc/5gmag-rt-conf file:
seamless_switching: {
enabled: true;
truncate_cdn_playlist_segments: 3
},
bootstrap_format: "";
HLS Broadcast
Point to a local service announcement in the etc/5gmag-rt-conf file e.g.:
local_service: {
bootstrap_file: "/home/dsi/5G-MAG/rt-common-shared/mbms/bootstrap_examples/bootstrap.multipart.legacy.hls";
}
Disable seamless switching and set the right SA format in the etc/5gmag-rt-conf file:
seamless_switching: {
enabled: false;
truncate_cdn_playlist_segments: 3
},
bootstrap_format: "5gmag_legacy";
DASH Broadcast
Point to a local service announcement in the etc/5gmag-rt-conf file e.g.:
local_service: {
bootstrap_file: "/home/dsi/5G-MAG/rt-common-shared/mbms/bootstrap_examples/bootstrap.multipart.legacy.dash";
}
Disable seamless switching and set the right SA format in the etc/5gmag-rt-conf file:
seamless_switching: {
enabled: false;
truncate_cdn_playlist_segments: 3
},
bootstrap_format: "5gmag_legacy";