shorten movies by timelapse and layering
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# how to export to frames: | |
#ffmpeg -i day1-total.mov -sameq ./Outputdir/day1%5d.jpg | |
# length of a file | |
# sox --info -D file.wav | cut -d"." -f1 | |
# or use -f image2 as export option. | |
# names the frames as frame0001.jpg, frame0002.jpg, etc. | |
# for long movies use %5d.jpg | |
#choose four prefixes | |
DA="A"; | |
cd frames | |
shortening_factor=$1 | |
length_seconds=$2 | |
length_frames=$3 | |
# frames:126715 seconds:4235 | |
# for four digit numbers with leading zeroes, counter needs to start as five digit # | |
# then remove the left most digit. | |
counter=1000000 | |
number_frames=length_frames/shortening_factor | |
# for f in $DF/*.jpeg; do | |
for (( i = 0 ; i < number_frames ; i++ )) | |
do | |
echo $i | |
# for f in ${DA}*.jpg; do | |
let "counter+=1" | |
#foo=cam${counter:1}.jpeg | |
let "b=i" | |
let "count=1000001+b*shortening_factor" | |
cp ${DA}${count:1}.jpg TL_${DA}${counter:1}.jpg | |
echo $count | |
for ((j=0 ; j < shortening_factor ; j++)) | |
do | |
echo $j | |
let "count2=counter+j*number_frames"; | |
cp ${DA}${count2:1}.jpg temp${j}.jpg | |
done | |
convert temp*.jpg -average LYR_${DA}${counter:1}.jpg | |
# montage -geometry 320x240 ${DA}${counter:1}.jpg ${DB}${counter:1}.jpg ${DC}${counter:1}.jpg ${DD}${counter:1}.jpg ./montage${counter:1}.jpg | |
done | |
ffmpeg -r 30 -sameq -i TL_${DA}%06d.jpg ../TL_${DA}_yo.mp4 | |
ffmpeg -r 30 -sameq -i LYR_${DA}%06d.jpg ../LYR_${DA}_yo.mp4 |
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