From 7c647c493f25254082d2e47a88a5a07344bc33ae Mon Sep 17 00:00:00 2001
From: Jan Jastrow <jan@schwerkraftlabor.de>
Date: Thu, 20 Jan 2022 00:05:21 +0100
Subject: [PATCH] Move infobox design to variables

---
 vithumbs.sh | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/vithumbs.sh b/vithumbs.sh
index 1bb5f28..f2539bb 100755
--- a/vithumbs.sh
+++ b/vithumbs.sh
@@ -5,7 +5,7 @@ if [ -z "$1" ]; then
 	exit
 fi
 
-# Define variables
+# Input variables
 INPUT=$1
 COLS=$2
 if [ -z "$COLS" ]; then
@@ -19,7 +19,16 @@ SIZE=$4
 if [ -z "$SIZE" ]; then
 	SIZE=1600
 fi
+
+# Design variables
+INFO_TEXTCOLOR="0xEEEEEE"
+INFO_BGCOLOR="0x282828"
+INFO_FONTSIZE=20
+INFO_LINESPACING=5
+INFO_HEIGHT=110
 FONTFILE=""
+
+# Render text in system monospace font if no other is defined
 if [ -z "$FONTFILE" ]; then
 	FONT="font=Mono"
 else
@@ -32,8 +41,8 @@ DURX=$(ffmpeg -i "$INPUT" 2>&1 | grep Duration | awk '{print $2}' | tr -d ,)
 DURATION=$(ffmpeg -i "$INPUT" 2>&1 | grep "Duration"| cut -d ' ' -f 4 | sed s/,// | sed 's@\..*@@g' | awk '{ split($1, A, ":"); split(A[3], B, "."); print 3600*A[1] + 60*A[2] + B[1] }')
 RES=$(ffprobe -v error -select_streams v:0 -show_entries stream=width,height -of csv=s=x:p=0 "$INPUT")
 FILESIZE=$(du -sm "$INPUT" | awk '{print $1}')
-METADATA_PX=110
 TMPDIR="/tmp/thumbnails-${RANDOM}/"
+
 mkdir $TMPDIR
 
 for (( VARIABLE=0; VARIABLE<NFRAMES; VARIABLE++ ))
@@ -64,11 +73,11 @@ scaledheight=$(echo "scale=0;$theheight*$SIZE/$thewidth" | bc)
 ffmpeg $FFMPEG_VERBOSITY -i ${TMPDIR}tiled.png -vf scale=${SIZE}x${scaledheight} -vframes 1 ${TMPDIR}tiled_resized.png
 
 # Add space to the top of the image
-finalheight=$(echo "$scaledheight+$METADATA_PX" | bc)
+finalheight=$(echo "$scaledheight+$INFO_HEIGHT" | bc)
 
 # Add Metadata
-ffmpeg -f lavfi -i color=0x282828:${SIZE}x${finalheight} $FFMPEG_VERBOSITY -i ${TMPDIR}tiled_resized.png \
--filter_complex "[0:v][1:v] overlay=0:$METADATA_PX,drawtext=$FONT:fontsize=20:fontcolor=0xEEEEEE:line_spacing=5:x=12:y=12:textfile=${TMPDIR}metadata.txt" \
+ffmpeg -f lavfi -i color=$INFO_BGCOLOR:${SIZE}x${finalheight} $FFMPEG_VERBOSITY -i ${TMPDIR}tiled_resized.png \
+-filter_complex "[0:v][1:v] overlay=0:$INFO_HEIGHT,drawtext=$FONT:fontsize=$INFO_FONTSIZE:fontcolor=$INFO_TEXTCOLOR:line_spacing=$INFO_LINESPACING:x=12:y=12:textfile=${TMPDIR}metadata.txt" \
 -vframes 1 -q:v 2 "${INPUT}_vithumbs.jpg"
 
 # Clean tempfiles