# timelapse using the Bullseye "libcamera" library
import os
import time

#  Usage:  "-t <number>" is the duration to be capturing frames in milliseconds. (ex: 30000 is 30 seconds. 60000 is one minute.) 
#          "timelapse <number>" is thre delay between capturing frames. (ex: "--timelapse 5000" captures a frame every 5 seconds.)

os.system(f'libcamera-still --nopreview -t 30000 --timelapse 2000 --framestart 1 -o frames/image%04d.jpg --width 1280 --height 720')


# the following flips the image vertically and horizontally.
#os.system(f'libcamera-still --nopreview -t 30000 --vflip --hflip --timelapse 2000 --framestart 1 -o frames/image%04d.jpg --width 1280 --height 720')

# Code for stitching frames together with ffmpeg:
#  ffmpeg -r 10 -f image2 -pattern_type glob -i 'image*.jpg' -s 1280x720 -vcodec libx264 timelapse.mp4