icecast improvements

[distro-setup] / ffs

diff --git a/ffs b/ffs
index fe42908750b636051efe1ba9d2393b89d95f94e3..d63668b6e45b3736e479b37ba1851f32351b9df4 100755 (executable)
--- a/ffs
+++ b/ffs
@@ -22,12 +22,9 @@
 
 # ffs = ffmpeg stream
 
-# todo: learn to start working in one corner of the screen.
-
-# potential improvement: it might be nice that we could have a tall terminal bug only use
+# potential improvement: it might be nice that we could have a tall terminal but only use
 # the top half for a 1080p stream, this is how:
 # https://superuser.com/questions/1106674/how-to-add-blank-lines-above-the-bottom-in-terminal
-#
 
 
 if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
@@ -146,12 +143,22 @@ fi
 
 ##### end command line parsing ########
 
-host=live.iankelling.org:8000
-if ip n show 10.2.0.1 | grep . &>/dev/null && \
-    [[ $(dig +timeout=1 +short @10.2.0.1 -x 10.2.0.2 2>&1 ||:) == kd.b8.nz. ]]; then
+host=live.iankelling.org:8443
+live_host=$(dig +timeout=1 +short @iankelling.org live.iankelling.org)
+vps_host=$(dig +timeout=1 +short iankelling.org)
+if [[ $live_host != "$vps_host" ]] &&  ip n show 10.2.0.1 | grep . &>/dev/null && \
+     [[ $(dig +timeout=1 +short @10.2.0.1 -x 10.2.0.2 2>&1 ||:) == kd.b8.nz. ]]; then
   host=127.0.0.1:8000
+else
+  find_prefix="ssh live.iankelling.org"
+fi
+
+if $find_prefix find /var/icecast -type f | grep .; then
+  echo "warning: suggest clearing /var/icecast with icrmr or moving files. sleeping for 4 seconds"
+  sleep 4
 fi
 
+
 pass=$(sed -n 's/ *<source-password>\([^<]*\).*/\1/p' /p/c/icecast.xml)
 
 
@@ -179,7 +186,14 @@ else
   stream_res=$primary_res
 fi
 
-framerate=8
+# for 1080p, default 256k is poor quality. 500 is ok. 1500 is a bit
+# better, so go with that.  Also, that is about 2x what is recommended
+# in https://livekit.io/webrtc/bitrate-guide (our framerate is lower).
+
+bitrate=$(( ( ${stream_res/x/*} ) / 1380 ))
+
+# 8 seems fine. be conservative by going a bit higher.
+framerate=10
 keyframe_interval=$((framerate * 2))
 
 # Monitor of default sink.
@@ -266,8 +280,7 @@ opts=(
   -vcodec libvpx
   -g $keyframe_interval
   -quality realtime
-  # for 1080p, default 256k is poor quality. 500 is ok. 1500 is a bit better.
-  -b:v 1500k
+  -b:v ${bitrate}k
   -threads 2
   -error-resilient 1
 
@@ -357,8 +370,6 @@ if $watch; then
   rm -f $HOME/.iank-stream-on
 fi
 
-
-
 ### begin background/development docs ###
 
 # zmq vs stdin commands: