FFmpeg + Python split big video in 30 minutes chunks

ffmpeg_chunks.py

import subprocess

def split_video(input_file, output_prefix, duration=1800):
    command = [
        'ffmpeg',
        '-i', input_file,
        '-c', 'copy',
        '-segment_time', str(duration),
        '-f', 'segment',
        '-reset_timestamps', '1',
        '-segment_format', 'mp4',
        output_prefix + '%03d.mp4'
    ]

    subprocess.run(command)

# Example usage
input_file = 'bigvid.mp4'
output_prefix = 'vids30mins'
split_video(input_file, output_prefix, duration=1800)