utils/export_utils.py

from moviepy.config import get_setting
from moviepy.tools import subprocess_call
import os


def ffmpeg_extract_subclip(filename, t1, t2, targetname=None):
    """ Makes a new video file playing video file ``filename`` between
        the times ``t1`` and ``t2``. """
    name, ext = os.path.splitext(filename)
    if not targetname:
        T1, T2 = [int(1000*t) for t in [t1, t2]]
        targetname = "%sSUB%d_%d.%s" % (name, T1, T2, ext)

    cmd = [get_setting("FFMPEG_BINARY"),"-y",
           "-i", filename,
           "-ss", "%0.4f"%t1,
           "-t", "%0.4f"%(t2-t1),
           "-vf",
           "scale=320:-2",
           targetname
        ]
    print(f'== cmd: {cmd}')
    subprocess_call(cmd)

def trim_video(video_path, start, end, output_file='result.mp4'):
    ffmpeg_extract_subclip(video_path, start, end, targetname=output_file)
    return output_file