#!/bin/bash

#
#	a new experiment 2026/02/29
#

	##############################
	#   THIS SOFTWARE IS A MESS  #
	#    TOO SLOW FOR REAL USE   #
	##############################

set -e   ;   set -u
source tools/config.sh
source tools/fonctions.sh

START=1
if [ $# == 1 ]
then
	START=$1
fi

NB_SRC=$(ls -1 frames/Spool | wc -l)

printf "%s: %d frames\n" $0 $NB_SRC | tee -a WS/log

# -------------------------------------------------------
#		MAIN LOOP

for frame in $(seq $START $(( $NB_SRC-1 )) )
do
	imgA=$(printf "frames/Spool/%05d.png" $frame)
	imgB=$(printf "frames/Spool/%05d.png" $((frame-1)))
	imgC=$(printf "frames/TMP/%05d.png" $frame)
	# echo $imgA $imgB
	printf "%8d" $frame 
	composite	$imgA   $imgB			\
			-blend  50%			\
			-blur 1x1			\
			$imgC
done

ff_encodage TMP motion-blurred.mp4

# -------------------------------------------------------