Youtube Video Download & Trim

download_video.py

# https://github.com/mps-youtube/pafy
import pafy

if __name__ == '__main__':
    video_url = 'https://www.youtube.com/watch?v=D_Ij3fAps4s'
    video = pafy.new(video_url)
    print(video.title, video.duration)

    best = video.getbest()
    best.download(quiet=False)

trim_video.py

import ffmpeg # https://github.com/kkroening/ffmpeg-python/


def trim(input_path, output_path, start=30, end=60):
    """
    https://github.com/kkroening/ffmpeg-python/issues/184
    """

    input_stream = ffmpeg.input(input_path)

    vid = (
        input_stream.video
        .trim(start=start, end=end)
        .setpts('PTS-STARTPTS')
    )

    aud = (
        input_stream.audio
        .filter_('atrim', start=start, end=end)
        .filter_('asetpts', 'PTS-STARTPTS')
    )

    joined = ffmpeg.concat(vid, aud, v=1, a=1).node
    output = ffmpeg.output(joined[0], joined[1], output_path)
    output.run()


if __name__ == '__main__':
    input_path = './HOZIN | KING OF POP | Judge showcase.mp4'
    output_path = './hozin_short.mp4'
    trim(input_path, output_path, start=30, end=60)