videocr/videocr/api.py

from urllib.request import urlopen
import pathlib
import os
import shutil

from . import constants
from .video import Video


def get_subtitles(video_path: str, lang='eng',
                  time_start='0:00', time_end='', use_fullframe=False) -> str:
    # download tesseract data file to ./tessdata/ if necessary
    fpath = pathlib.Path('tessdata/{}.traineddata'.format(lang))
    if not fpath.is_file():
        if lang == 'eng':
            url = constants.ENG_URL
        else:
            url = constants.TESSDATA_URL.format(lang)
        os.makedirs('tessdata', exist_ok=True)
        with urlopen(url) as res, open(fpath, 'w+b') as f:
            shutil.copyfileobj(res, f)

    v = Video(video_path)
    v.run_ocr(lang, time_start, time_end, use_fullframe)
    return v.get_subtitles()


def save_subtitles_to_file(
        video_path: str, file_path='subtitle.srt', lang='eng',
        time_start='0:00', time_end='', use_fullframe=False) -> None:
    with open(file_path, 'w+') as f:
        f.write(get_subtitles(
            video_path, lang, time_start, time_end, use_fullframe))