extract segments from video clips and concatenate

edit_video.py

import os
import subprocess

from moviepy.video.io.ffmpeg_tools import ffmpeg_extract_subclip

clip_times = {
    "clip1.mp4": [
        ((2, 12), (2, 20)),
        ((2, 25), (2, 35)),
    ],
    "clip2.mp4": [
        ((0, 2), (0, 15)),
        ((3, 25), (3, 35)),
        ((6, 20), (6, 35)),
        ((9, 0), (9, 15)),
        ((14, 10), (14, 15)),
        ((25, 8), (25, 15)),
        ((28, 38), (28, 48)),
        ((29, 35), (29, 42)),
    ],
}


def clip_name(clip, i):
    return clip.replace(".", f"_{i}.")


def extract(clip, times):
    for i, v in enumerate(times):
        start_time = v[0][0] * 60 + v[0][1]
        end_time = v[1][0] * 60 + v[1][1]
        ffmpeg_extract_subclip(
            clip, start_time, end_time, targetname=clip_name(clip, i)
        )


def main():
    for clip, times in clip_times.items():
        extract(clip, times)

    with open("clips.txt", "w", encoding="utf-8") as f:
        for clip, times in clip_times.items():
            for i in range(len(times)):
                f.write(f"file {clip_name(clip, i)}\n")

    subprocess.run(
        [
            "ffmpeg",
            "-f",
            "concat",
            "-i",
            "clips.txt",
            "-c",
            "copy",
            "output.mp4",
        ],
        check=True,
    )
    os.remove("clips.txt")
    for clip, times in clip_times.items():
        for i in range(len(times)):
            os.remove(clip_name(clip, i))


if __name__ == "__main__":
    main()