From 99e84f44327d2df03329267decac05ff020878e5 Mon Sep 17 00:00:00 2001
From: douzeb <fabrice.bellamy@distrilab.fr>
Date: Wed, 1 Mar 2023 23:31:48 +0100
Subject: [PATCH] W.I.P.

---
 stream_v4l_device.sh | 61 ++++++++++++++++++++++----------------------
 1 file changed, 31 insertions(+), 30 deletions(-)

diff --git a/stream_v4l_device.sh b/stream_v4l_device.sh
index 969c544..accfb32 100755
--- a/stream_v4l_device.sh
+++ b/stream_v4l_device.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 
-DURATION=300
-RESOLUTION=1280x720
+REPLAY_RESOLUTION=1280x720
+LIVE_RESOLUTION=854x480
 VBITRATE=2048
 ABITRATE=128
 V4LDEVICE=0
-FPS=12
+FPS=10
 
 if [[ $# -lt 3 ]] ; then
   echo "Not enough arguments supplied" >&2
@@ -13,11 +13,11 @@ if [[ $# -lt 3 ]] ; then
   echo "first parameter the rtmp port as the second and the streaming key as the third" >&2
   echo " " >&2
   echo "syntax: " >&2
-  echo "  $(basename $0) <peertube-server> <rtmp port> <streaming-key> <duration-in-sec> <resolution> <video-bitrate-kbps> <audio-bitrate-kbps> <v4ldevice> <frames per seconds>" >&2
+  echo "  $(basename $0) <peertube-server> <rtmp port> <streaming-key> <replay resolution> <live resolution> <frames per seconds> <video-bitrate-kbps> <audio-bitrate-kbps> <v4ldevice>" >&2
   echo " " >&2
   echo "other parameters are optional and will default to the " >&2
   echo "values in the following example :" >&2
-  echo "  `basename $0` tube.example.com 1935 69ac2d29-eba4-4d5f-a3a6-6047e6768ffb $DURATION $RESOLUTION $VBITRATE $ABITRATE $V4LDEVICE $FPS" >&2
+  echo "  `basename $0` tube.example.com 1935 69ac2d29-eba4-4d5f-a3a6-6047e6768ffb $REPLAY_RESOLUTION $LIVE_RESOLUTION $FPS $VBITRATE $ABITRATE $V4LDEVICE" >&2
   exit 1
 fi
 
@@ -25,49 +25,43 @@ URL=rtmp://$1:$2/live/$3
 
 if [[ ! -z "$4" ]]
 then
-  DURATION="$4"
+  REPLAY_RESOLUTION="$4"
 fi
 
 if [[ ! -z "$5" ]]
 then
-  RESOLUTION="$5"
+  LIVE_RESOLUTION="$5"
 fi
 
 if [[ ! -z "$6" ]]
 then
-  VBITRATE="$6"
+  FPS="$6"
+fi
+
+if [[ ! -z "$7" ]]
+then
+  VBITRATE="$7"
 fi
 
 BUFFERSIZE=$(echo "2*${VBITRATE}" | bc)
 
-if [[ ! -z "$7" ]]
-then
-  ABITRATE="$7"
-fi
-
 if [[ ! -z "$8" ]]
 then
-  V4LDEVICE="$8"
+  ABITRATE="$8"
 fi
 
 if [[ ! -z "$9" ]]
 then
-  FPS="$9"
+  V4LDEVICE="$9"
 fi
 
 
-FILENAME=live-v4l-${1}-cam${V4LDEVICE}-${RESOLUTION}p-${DURATION}s-${VBITRATE}kbps-${ABITRATE}kbps-${2}
+
+FILENAME=${1}-cam${V4LDEVICE}
 echo " "
-echo Will stream to $URL for $DURATION seconds
-echo and save a copy of the data sent to the peertube server to file :
+echo Will stream to $URL
+echo and save a copy of the data file :
 echo $FILENAME
-echo with :
-echo "- $RESOLUTION resolution, "
-echo "- $VBITRATE kbit/s constant video bitrate, "
-echo "- $BUFFERSIZE kbit video buffer and "
-echo "- $ABITRATE kbit/s audio bitrate"
-echo " "
-$
 
 #-x264opts nal-hrd=cbr:force-cfr=1:vbv-bufsize=${BUFFERSIZE}:bitrate=${VBITRATE}:vbv-maxrate=${VBITRATE} \
 #-shortest \
@@ -78,21 +72,28 @@ $
 #-re \
 #-f lavfi \
 #-i aevalsrc="(1-min(1\,mod(floor(5*t)\,50)))*0.1*sin(8*PI*(360-2.5/2)*t)+0.1*sin(2*PI*(360-2.5/2)*t)|(1-min(1\,mod(floor(5*t)\,50)))*0.1*sin(8*PI*(360+2.5/2)*t)+0.1*sin(2*PI*(360+2.5/2)*t):sample_rate=48000" \
+#-t ${DURATION} \
+
+#-f lavfi -i aevalsrc="(1-min(1\,mod(floor(5*t)\,50)))*0.1*sin(8*PI*(360-2.5/2)*t)+0.1*sin(2*PI*(360-2.5/2)*t)|(1-min(1\,mod(floor(5*t)\,50)))*0.1*sin(8*PI*(360+2.5/2)*t)+0.1*sin(2*PI*(360+2.5/2)*t):sample_rate=48000" \
+#-f alsa -ac 2 -i hw:CARD=CAMERA,DEV=${V4LDEVICE} \
+
 
 ffmpeg \
 -loglevel level \
 -y \
--f v4l2 -framerate ${FPS} -video_size ${RESOLUTION} -input_format mjpeg -i /dev/video${V4LDEVICE} \
--f alsa -ac 2 -i hw:CARD=CAMERA,DEV=${V4LDEVICE} \
+-f v4l2 -framerate ${FPS} -video_size ${REPLAY_RESOLUTION} -input_format mjpeg -i /dev/video${V4LDEVICE} \
+-f lavfi -i aevalsrc="(1-min(1\,mod(floor(5*t)\,50)))*0.1*sin(8*PI*(360-2.5/2)*t)+0.1*sin(2*PI*(360-2.5/2)*t)|(1-min(1\,mod(floor(5*t)\,50)))*0.1*sin(8*PI*(360+2.5/2)*t)+0.1*sin(2*PI*(360+2.5/2)*t):sample_rate=48000" \
 -channel_layout stereo \
 -ar 48000 \
 -pixel_format yuv420p \
--filter_complex "[1:a]volume=-10dB;[0:v]scale='size=${RESOLUTION}',drawtext='font=DejaVuSansMono:text=%{pts}: fontcolor=white: fontsize=h/12: box=1: boxcolor=black@0.43: boxborderw=5: x=mod(floor(t/10+1)\,2)*mod(t*(w-text_w)/10\,w-text_w)+mod(floor(t/10)\,2)*(w-text_w-mod(t*(w-text_w)/10\,w-text_w)): y=text_h/2', drawtext='font=DejaVuSansMono:text=%{localtime}: fontcolor=white: fontsize=h/20: box=1: boxcolor=black@0.43: boxborderw=5: x=text_h: y=h-3*text_h/2'" \
+-filter_complex "[1:a]volume=-10dB;[0:v]drawtext='font=DejaVuSansMono:text=%{pts}: fontcolor=white: fontsize=h/12: box=1: boxcolor=black@0.43: boxborderw=5: x=mod(floor(t/10+1)\,2)*mod(t*(w-text_w)/10\,w-text_w)+mod(floor(t/10)\,2)*(w-text_w-mod(t*(w-text_w)/10\,w-text_w)): y=text_h/2', drawtext='font=DejaVuSansMono:text=%{localtime}: fontcolor=white: fontsize=h/20: box=1: boxcolor=black@0.43: boxborderw=5: x=text_h: y=h-3*text_h/2', split=2[out1][out2]" \
 -codec:v libx264 \
 -preset fast \
 -x264opts nal-hrd=cbr:force-cfr=1:vbv-bufsize=${BUFFERSIZE}:bitrate=${VBITRATE}:vbv-maxrate=${VBITRATE} \
 -c:a aac -b:a ${ABITRATE}k \
 -g 1 -segment_format_options movflags=+frag_keyframe+empty_moov+default_base_moof -segment_time 5 -f segment \
--t ${DURATION} \
 -flags +global_header \
--f tee -map 0:v -map 1:a "[f=matroska]${FILENAME}.mkv|[f=flv]${URL}"
+-map '[out1]' -s ${LIVE_RESOLUTION} -map 1:a -f flv ${URL} \
+-map '[out2]' -s ${REPLAY_RESOLUTION} -map 1:a -f matroska \
+-f segment -segment_time 10:00 -reset_timestamps 1 \
+-strftime 1 "${FILENAME}_%Y-%m-%d_%H-%M-%S.mkv"