Timelapse with time written on it, logitech c920 + fswebcam on Ubuntu 18

timelapse.sh

#!/bin/bash                                                                                                                            

# Timelapse controller for USB webcam on Ubuntu 18.04 / works well with logitech C920                                                  
# Before using it run:                                                                                                                 
# sudo apt install fswebcam imagemagick                                                                                                

DIR=frames

#counter for filename                                                                                                                  
n=1
#counter for files saved                                                                                                               
x=1
#number of screenshots to take                                                                                                         
num=1000000
#interval at which screenshots get taken in seconds                                                                                    
interval=60

while [ $x -le $num ]; do
    filename=$(printf "%s.jpg" `date '+%Y-%m-%d-%H:%M:%S'`)
    let n=n+1
    #Capture image                                                                                                                     
    fswebcam -S 10 -D 4 -r 1280x720 --jpeg 95 --no-banner --save $DIR/$filename
    #add timestamp with imagemagick                                                                                                    
    convert $DIR/$filename -pointsize 30 -font '/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf'  -fill white -stroke black -gravity s\
outheast -annotate +4+0 "$(date +"%D %r")" $DIR/$filename
    x=$(( $x + 1 ))
    sleep $interval;
done;