Scripts for building a random playlist and streaming to server.

common.sh

@@ -28,6 +28,10 @@ SetupHistory () {
 	echo "${HISTORY_SETUP}" | sqlite3 "${HISTORY}"
 }
 
+WipeHistory () {
+	rm -f "${HISTORY}"
+}
+
 SetupPlayback () {
 	echo "${PLAYBACK_SETUP}" | sqlite3 "${PLAYBACK}"
 }
@@ -36,10 +40,20 @@ WipePlayback () {
 	rm -f "${PLAYBACK}"
 }
 
+GetRandom () {
+	QUERY="SELECT video FROM playback ORDER BY RANDOM() LIMIT 1;"
+	sqlite3 "${HISTORY}" "${QUERY}"
+}
+
+UpdateHistory () {
+	QUERY="INSERT INTO"
+}
+
 PDB () {
 	sqlite3 "${PLAYBACK}" "${1}"
 }
 
 HDB () {
 	sqlite3 "${HISTORY}" "${1}"
-}
+}
+

encode.sh

@@ -11,21 +11,34 @@ if [ ${count} == 0 ]; then
 	exit 1
 fi
 
-SCALE="scale=${WIDTH}:${HEIGHT}:force_original_aspect_ratio=decrease,pad=${WIDTH}:${HEIGHT}:(ow-iw)/2:(oh-ih)/2"
+SCALE="-filter_complex scale=${WIDTH}:${HEIGHT}:force_original_aspect_ratio=decrease,pad=${WIDTH}:${HEIGHT}:(ow-iw)/2:(oh-ih)/2"
+HWENCODE="-hwaccel auto"
+SILENT="-loglevel quiet -stats"
+
+if [[ "${BUG}" != "" ]]; then
+	SCALE="-i ${BUG} -filter_complex [0]scale=${WIDTH}:${HEIGHT}:force_original_aspect_ratio=decrease,pad=${WIDTH}:${HEIGHT}:(ow-iw)/2:(oh-ih)/2,overlay=x=0:y=0[out] -map [out]"
+fi
 
 Encode () {
 	name=$(basename "${1}")
 	nameNoExt=${name%.*}
 	now=$(date '+%s')
-	output="${VIDEOS}/${nameNoExt}_${now}.flv"
-	if [ -f "${VIDEOS}/${nameNoExt}"*".flv" ]; then
+	output="${VIDEOS}/${nameNoExt}_${now}.mkv"
+	#echo $output
+	if [ -f "${VIDEOS}/${nameNoExt}"*".mkv" ]; then
 		echo "File ${name} already exists"
 		return
 	fi
 	echo "Encoding ${name}..."
-	ffmpeg -i "${1}" -c:v libx264 -tune zerolatency -pix_fmt yuv420p -vf "${SCALE}" \
-		-c:a aac -b:a 190k -ac 2 -ar 44100 \
-		-f flv "${output}"
+	if [[ "${name}" == *".jpg" ]] || [[ "${name}" == *".jpeg" ]] || [[ "${name}" == *".png" ]]; then
+	ffmpeg -nostdin -loop 1 -t 30 -i "${1}" ${SCALE} -c:v libx264 -tune zerolatency -pix_fmt yuv420p -r 30 -t 30  \
+		-an ${SILENT} \
+		 "${output}"
+	else
+		ffmpeg -nostdin ${HWENCODE} -i "${1}" ${SCALE} -c:v libx264 -tune zerolatency -pix_fmt yuv420p \
+			-c:a aac -b:a 190k -ac 2 -ar 44100 \
+			-f flv ${SILENT} "${output}"
+	fi
 }
 
 fileList=$(mktemp)

nginx-rtmp.conf

@@ -0,0 +1,21 @@
+
+rtmp {
+  server {
+    listen 1935;
+
+    application live {
+      # Enable livestreaming
+      live on;
+
+      # Disable recording
+      record off;
+
+      # Allow only this machine to play back the stream
+      allow play 127.0.0.1;
+      deny play all;
+
+      # Start omxplayer and play the stream out over HDMI
+      #exec /home/pi/stream.sh $name;
+    }
+  }
+}

playlist.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+
+source ./common.sh
+
+fileList=$(mktemp)
+shuffleList=$(mktemp)
+
+ls -1 "${VIDEOS}/" > "${fileList}"
+rm -rf playlist.txt
+
+count=10
+for i in $(seq $count); do
+	cat "${fileList}" | shuf > "${shuffleList}"
+	while read videoIn; do
+		echo "file '${VIDEOS}/${videoIn}'" >> playlist.txt
+	done < "${shuffleList}"
+done
+
+rm -f "${fileList}"
+rm -f "${shuffleList}"

setup_raspi.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+################################################
+#
+# Works with 2020-02-13-raspbian-buster-lite.zip
+#
+################################################
+
+sudo apt update -y
+sudo apt upgrade -y
+sudo apt install -y git curl omxplayer nginx libnginx-mod-rtmp
+sudo apt autoremove
+
+sudo cat ./nginx-rtmp.conf >> /etc/nginx/nginx.conf

stream.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+
+source ./common.sh
+
+ffmpeg -re -f concat -safe 0 -stream_loop -1 -i playlist.txt -c copy -f flv "${DESTINATION}"

tv.sh

@@ -26,7 +26,6 @@ AllFiles () {
 	echo "${fileList}"
 }
 
-
 SetupHistory
 WipePlayback
 SetupPlayback
@@ -37,11 +36,16 @@ while true; do
 	files=$(AllFiles)
 	fileCount=$(cat "${files}" | wc -l)
 	playbackCount=$(PDB "SELECT COUNT(*) FROM playback")
-
 	if [ ${fileCount} -eq 0 ]; then
 		echo "No files to play :("
 		break
 	fi
+	if [ ${playbackCount} -eq 0 ]; then
+		WipeHistory
+		SetupHistory
+		continue
+	fi
+
 	break
 done