Linking an RTSP based camera (e.g. webcam) with unusable snapshots to Prusa Connect

prusa_rtsp_upload

#!/bin/sh
#
# prusa_rtsp_upload - Upload stills from an RTSP camera to Prusa Connect
#.     Uses ffmpeg to take snapshots of the video feed, for cameras whose
#.     snapshot URL produces low quality snapshots
#
# Copyright (C) 2024 Matthias Neeracher <microtherion@gmail.com>
# Licensed under CC-BY terms: https://creativecommons.org/licenses/by/4.0/
#

# Prerequisites: ffmpeg, curl

URL='https://webcam.connect.prusa3d.com/c/snapshot'
CAMERA='rtsp://admin:@192.168.1.58:554/0/video0'           # REPLACE with your own video URL
TOKEN='BCNzDVLwIRwpnOD64QOn'                               # REPLACE with token issued by Prusa Connect
# Picking a random but reasonably static value
FINGERPRINT=`ifconfig | grep ether | sort | head -1 | md5`
INTERVAL=10

ffmpeg -i $CAMERA -vf fps=1/$INTERVAL img%08d.jpg -loglevel verbose 2>&1 | grep --line-buffered Statistics | while read x; do
    image=`ls *.jpg|head -1`
    curl $URL -H 'Content-Type: image/jpg' -H "fingerprint: $FINGERPRINT" -H "token: $TOKEN" -T $image
    printf "\015"$image
    rm $image
done