main.py
This commit is contained in:
Daniel Tsvetkov
commit
2295246d97
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import os
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import textwrap
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from pprint import pprint
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TIME_SEP = " --> "
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DECIMAL_SEP = '.'
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HMS_SEP = ':'
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FONT_SIZE = 18
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WORD_BREAK = 60
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MAX_ITER = 0
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SHOULD_REMOVE_TEMPS = False
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SHOULD_CUT_VIDEOS = False
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SHOULD_COPY_CODEC = False
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FINAL_TITLE = "fusion_power"
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DE_VIDEO = "https://www.youtube.com/watch?v=lj4IC70kDIU"
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EN_VIDEO = "https://www.youtube.com/watch?v=mZsaaturR6E"
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def ts_to_sec(ts):
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hms, ms = ts.split(DECIMAL_SEP)
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h, m, s = hms.split(HMS_SEP)
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return int(h) * 3600 + int(m) * 60 + int(s) + int(ms) / 1000
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def parse_subs(filename):
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with open(filename) as f:
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subs, start_ts, end_ts, in_text, text = [], "", "", False, ""
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for line in f.readlines():
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if TIME_SEP in line:
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if start_ts:
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subs.append((ts_to_sec(start_ts), ts_to_sec(end_ts), text))
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start_ts, end_ts = line.split(TIME_SEP)
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in_text, text = True, ""
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continue
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if in_text:
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text += line.strip() + " "
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return subs
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def run_os_cmd(command):
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print(command)
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output = os.popen(command).read()
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return output
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def cut_videos(idx, en_start, en_end, de_start, de_end, en_txt, de_txt):
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print("cut_{:02d}: en: {:6.2f} -> {:6.2f}, de: {:6.2f} -> {:6.2f}".format(
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idx, en_start, en_end, de_start, de_end,
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))
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with open('concat_{}.txt'.format(idx), 'w+') as f:
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f.write('file de_{}.mp4\n'.format(idx))
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f.write('file en_{}.mp4\n'.format(idx))
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f.write('file de_{}.mp4\n'.format(idx))
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run_os_cmd("ffmpeg -y -i en.mp4 -ss {en_start} -to {en_end} en_{idx}.mp4 2>logs/01_ffmpeg_cut_en_{idx}.log".format(
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en_start=en_start, en_end=en_end, idx=idx))
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run_os_cmd("ffmpeg -y -i de.mp4 -ss {de_start} -to {de_end} de_{idx}.mp4 2>logs/01_ffmpeg_cut_en_{idx}.log".format(
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de_start=de_start, de_end=de_end, idx=idx))
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if SHOULD_COPY_CODEC:
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run_os_cmd(
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"""ffmpeg -y -f concat -safe 0 -i concat_{idx}.txt -c copy deende_{idx}.mp4 2>logs/02_ffmpeg_concat_{idx}_copy.log""".format(
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idx=idx))
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else:
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run_os_cmd(
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"""ffmpeg -y -f concat -safe 0 -i concat_{idx}.txt deende_{idx}.mp4 2>logs/02_ffmpeg_concat_{idx}_nocopy.log""".format(
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idx=idx))
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en_txt_spl = '\n'.join(textwrap.wrap(en_txt, WORD_BREAK, break_long_words=False))
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de_txt_spl = '\n'.join(textwrap.wrap(de_txt, WORD_BREAK, break_long_words=False))
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text = "{}\n\n\n{}".format(de_txt_spl, en_txt_spl)
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with open('text_{}.txt'.format(idx), 'w+') as f:
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f.write(text)
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run_os_cmd(
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"""ffmpeg -y -i deende_{idx}.mp4 -vf drawtext="textfile=text_{idx}.txt: fontcolor=white: fontsize={fontsize}: box=1: boxcolor=black@0.5: boxborderw=5: x=(w-text_w)/2: y=(h-text_h)/2" -c:a copy deende_{idx}_s.mp4 2>logs/03_ffmpeg_sub_{idx}.log""".format(
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idx=idx, text=text, fontsize=FONT_SIZE))
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if SHOULD_REMOVE_TEMPS:
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run_os_cmd("rm en_{iter}.mp4 de_{iter}.mp4 concat_{iter}.txt text_{iter}.txt".format(iter=idx))
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def download_vids_and_subs():
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if SHOULD_REMOVE_TEMPS:
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run_os_cmd("rm en.mp4 de.mp4 subs.en.vtt subs.de.vtt")
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run_os_cmd("""youtube-dl -f worst --output="de.%(ext)s" {}""".format(DE_VIDEO))
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run_os_cmd("""youtube-dl -f worst --output="en.%(ext)s" {}""".format(EN_VIDEO))
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run_os_cmd(
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"""youtube-dl --output="subs.%(ext)s" --write-sub --sub-format vtt --sub-lang de --skip-download {}""".format(
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DE_VIDEO))
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run_os_cmd(
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"""youtube-dl --output="subs.%(ext)s" --write-sub --sub-format vtt --sub-lang en --skip-download {}""".format(
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EN_VIDEO))
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def time_subs():
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de_subs = parse_subs('subs.de.vtt')
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en_subs = parse_subs('subs.en.vtt')
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latest_de_idx = 0
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iterable = en_subs[:MAX_ITER] if MAX_ITER else en_subs
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for i, en_sub in enumerate(iterable):
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if latest_de_idx >= len(de_subs):
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print("{:6.2f} {:6.2f} {:>6} {:>6} {:>90} {:>90}".format(
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en_sub[0], en_sub[1], '', '',
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en_sub[2], '',
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))
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continue
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else:
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print("{:6.2f} {:6.2f} {:6.2f} {:6.2f} {:>90} {:>90}".format(
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en_sub[0], en_sub[1], de_subs[latest_de_idx][0], de_subs[latest_de_idx][1],
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en_sub[2], de_subs[latest_de_idx][2],
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))
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de_first_start = de_subs[latest_de_idx][0]
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de_txt = de_subs[latest_de_idx][2]
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latest_de_idx += 1
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en_sub_start, en_sub_end = en_sub[0], en_sub[1]
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de_last_end = de_subs[latest_de_idx - 1][1]
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while latest_de_idx < len(de_subs):
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de_next_sub_start, de_next_sub_end, txt = de_subs[latest_de_idx]
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if de_next_sub_end < en_sub_end:
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latest_de_idx += 1
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de_txt += txt
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print("{:>6} {:>6} {:6.2f} {:6.2f} {:>90} {:>90}".format(
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'', '', de_next_sub_start, de_next_sub_end,
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'', txt,
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))
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else:
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de_last_end = de_subs[latest_de_idx - 1][1]
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break
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if SHOULD_CUT_VIDEOS:
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cut_videos(i, en_sub[0], en_sub[1], de_first_start, de_last_end, en_sub[2], de_txt)
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return len(iterable)
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def concat_all_videos(max_iters):
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with open('concat.txt', 'w+') as f:
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for idx in range(max_iters):
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f.write('file deende_{}_s.mp4\n'.format(idx))
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if SHOULD_COPY_CODEC:
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run_os_cmd(
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"""ffmpeg -y -f concat -safe 0 -i concat.txt -c copy {final_title}.mp4 2>logs/04_ffmpeg_all_copy.log""".format(
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final_title=FINAL_TITLE))
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else:
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run_os_cmd(
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"""ffmpeg -y -f concat -safe 0 -i concat.txt {final_title}.mp4 2>logs/04_ffmpeg_all_nocopy.log""".format(
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final_title=FINAL_TITLE))
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if SHOULD_REMOVE_TEMPS:
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run_os_cmd("rm concat.txt")
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for idx in range(MAX_ITER):
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run_os_cmd("rm deende_{idx}.mp4".format(idx=idx))
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run_os_cmd("rm deende_{idx}_s.mp4".format(idx=idx))
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def main():
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download_vids_and_subs()
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max_iters = time_subs()
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concat_all_videos(max_iters)
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if __name__ == "__main__":
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main()
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