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from moviepy.editor import VideoFileClip
import numpy as np
import os
from datetime import timedelta
# i.e if video of duration 30 seconds, saves 10 frame per second = 300 frames saved in total
SAVING_FRAMES_PER_SECOND = 1
def format_timedelta(td):
"""Utility function to format timedelta objects in a cool way (e.g 00:00:20.05)
omitting microseconds and retaining milliseconds"""
result = str(td)
try:
result, ms = result.split(".")
except ValueError:
return result + ".00".replace(":", "-")
ms = int(ms)
ms = round(ms / 1e4)
return f"{result}.{ms:02}".replace(":", "-")
def main(video_file):
# load the video clip
video_clip = VideoFileClip(video_file)
# make a folder by the name of the video file
filename, _ = os.path.splitext(video_file)
filename += "-moviepy"
if not os.path.isdir(filename):
os.mkdir(filename)
# if the SAVING_FRAMES_PER_SECOND is above video FPS, then set it to FPS (as maximum)
saving_frames_per_second = min(video_clip.fps, SAVING_FRAMES_PER_SECOND)
# if SAVING_FRAMES_PER_SECOND is set to 0, step is 1/fps, else 1/SAVING_FRAMES_PER_SECOND
step = 1 / video_clip.fps if saving_frames_per_second == 0 else 1 / saving_frames_per_second
# iterate over each possible frame
for current_duration in np.arange(0, video_clip.duration, step):
# format the file name and save it
frame_duration_formatted = format_timedelta(timedelta(seconds=current_duration)).replace(":", "-")
frame_filename = os.path.join(filename, f"frame{frame_duration_formatted}.jpg")
# save the frame with the current duration
video_clip.save_frame(frame_filename, current_duration)
if __name__ == "__main__":
import sys
video_file = sys.argv[1]
main(video_file)
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