I used the demo
streaming.html code linked above as-is and host it statically on Nginx alongside Janus on a cloud VPS. As far as config, there is just the one file:
/etc/janus/janus.plugin.streaming.jcfg , but you can leave it blank and just use the html api¹ if you don't want to mess with that file as the API has an option:
"permanent":true
that automatically generates/updates the config for you. You can substitute srtp (secure) for regular rtp for testing, but I prefer to use the secure variant since it goes out to a public VPS and doesn't really incur any overhead for my source devices.
¹ https://janus.conf.meetecho.com/docs/streaming#streamapi
I wrote a little helper shell code using wget, openssl, dd, jq, and jo to make it easy to talk JSON to the API, for the one-off configs I do. Here is an example of what I use which demonstrates simulcast and srtp ingestion for both h264 and vp8 video streams as well as opus audio. Just fill in the [ ]'s with your specifics. I then use ffmpeg to generate all the streams and pipe to the appropriate ports for each simulcast level and target. If you use gstreamer beware srtp key format is different.
#!/bin/sh
server="https://[YOUR_JANUS_SERVER_HOST]/janus"
token(){ dd if=/dev/urandom bs=6 count=1 status=none|openssl base64;}
post_jo(){ first="$1";shift;wget --quiet --output-document - --post-data "$(jo -- "$@")" "$server$first";}
tx(){ post_jo "$@" transaction="$(token)";}
data_id(){ jq ".data.id//(null|halt_error(1))";}
message()( set -e
id="$(tx / janus=create|data_id)" # create janus session and store id
hn="$(tx "/$id" janus=attach plugin=janus.plugin.streaming|data_id)" # create plugin session and store id
tx "/$id/$hn" janus=message body="$(jo -- "$@")"
tx "/$id" janus=destroy >/dev/null
)
# example usage:
# list all streams
message request=list|jq .plugindata.data.list
# remove stream with id 666
message request=destroy id=666 secret=adminpwd permanent=true|jq
# create new stream
message request=create id=666 secret=adminpwd permanent=true name=[YOUR_STREAM_NAME] type=rtp media=["$(
jo type=video mid=v1 codec=h264 pt=96 simulcast=true svc=false port=5010 port2=5020 port3=5030 \
fmtp=level-asymmetry-allowed=1\;packetization-mode=1\;profile-level-id=42c01f
)","$(
jo type=video mid=v2 codec=vp8 pt=96 simulcast=true svc=false port=5012 port2=5022 port3=5032
)","$(
jo type=audio mid=a codec=opus pt=97 port=5000
)"] srtpsuite=80 srtpcrypto=zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz|jq # your srtp token needs to match your source
# show new stream info to verify configuration
message request=info id=666 secret=adminpwd|jq
# on streaming source device
ffmpeg [YOUR_INPUT_CONFIG HERE] -f rtp -srtp_out_suite SRTP_AES128_CM_HMAC_SHA1_80 -srtp_out_params zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz srtp://[YOUR_JANUS_SERVER_HOST]/:[PORT]
# for gstreamer, showing alternative key format
gst-launch-1.0 [YOUR_INPUT_CONFIG HERE] ! rtpav1pay ! srtpenc key=cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3cf3 ! udpsink host=[YOUR_JANUS_SERVER_HOST] port=[PORT]