485 lines
15 KiB
Python
485 lines
15 KiB
Python
#!/usr/bin/env python3
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import re, json
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import os, sys
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from datetime import timedelta
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###
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def from_vtt(vtt_string):
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VTT_TIMECODE_PATTERN = (
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r"((?:\d{2}:)?\d{2}:\d{2}\.\d{3}) --> ((?:\d{2}:)?\d{2}:\d{2}\.\d{3})"
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)
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VTT_LINE_NUMBER_PATTERN = r"^\d+$"
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parts = re.split(r"\n\n+", vtt_string.strip())
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if parts[0].startswith("WEBVTT"):
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parts.pop(0)
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subtitles = []
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for part in parts:
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lines = part.split("\n")
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match = re.match(VTT_TIMECODE_PATTERN, lines[0])
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if not match:
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if re.match(VTT_LINE_NUMBER_PATTERN, lines[0]):
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lines.pop(0)
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match = re.match(VTT_TIMECODE_PATTERN, lines[0])
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if not match:
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continue
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start, end = match.groups()
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content = "\n".join(lines[1:]) + "\n"
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# if start == end:
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# continue
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subtitles.append(
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{
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"start": start,
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"end": end,
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"content": (
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content.replace("-\n", "\n")
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.replace("</u>-\n", "</u>\n")
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.replace("-", " ")
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.replace("%", " ")
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.replace("<u> ", " <u>")
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.replace(" </u>", "</u> ")
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.replace("<u> </u>", "")
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.replace("<u></u>", "")
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.replace(" \n", "\n")
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)[:-1],
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}
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)
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return subtitles
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def to_vtt(subtitles):
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vtt_content = "WEBVTT\n\n\n"
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for idx, subtitle in enumerate(subtitles):
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content = subtitle["content"]
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if not subtitle.get("split", False):
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start = subtitle["start"]
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end = subtitle["end"]
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if not start or not end or start == end:
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raise Exception(f"VTT timestamp parse error from #{idx}.")
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vtt_content += f"{start} --> {end}\n{content}\n\n\n"
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else:
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vtt_content += f"NOTE {content}\n\n\n"
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return vtt_content.strip()
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def to_stacked_vtt(subtitles, continous=True):
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vtt_content = "WEBVTT\n\n\n"
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buffer = ""
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for n, subtitle in enumerate(subtitles):
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if subtitle.get("split", False):
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buffer = ""
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continue
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if len(buffer) != 0:
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if str(subtitle["content"].strip())[-1] == ".":
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buffer += "\n"
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else:
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buffer += " "
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buffer += subtitle["content"].strip()
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if n < len(subtitles) - 1:
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end_time = (
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subtitles[n + 1]["start"]
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if continous and not subtitles[n + 1].get("split", False)
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else subtitle["end"]
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)
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else:
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end_time = subtitle["end"]
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if not subtitle["start"] or not end_time:
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raise Exception(f"VTT timestamp parse error from #{idx}.")
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if subtitle["start"] == end_time:
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raise Exception(
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f"Error, subtitle timestamp overlaps.\n{subtitle['start']} --> {end_time} {subtitle['content'].strip()}"
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)
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vtt_content += f"{subtitle['start']} --> {end_time}\n"
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vtt_content += buffer
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vtt_content += "\n\n\n"
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print(f"{subtitle['start']} --> {end_time}\n{buffer}\n\n")
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return vtt_content
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###
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def script_from_word_vtt(wordvtt):
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subtitles = from_vtt(wordvtt)
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print(f"Generating script file from VTT...")
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sentences = []
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ADD_NEXT_SENTENCE = 0
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for n, subtitle in enumerate(subtitles):
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sentence = subtitle["content"].replace("<u>", "").replace("</u>", "")
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if ((sentences[-1] if sentences else None) != sentence) or ADD_NEXT_SENTENCE:
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sentences.append(sentence)
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ADD_NEXT_SENTENCE = 0
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if subtitle["content"][-4:] == "</u>":
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ADD_NEXT_SENTENCE = 1
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if n + 2 < len(subtitles):
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if (
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subtitles[n + 2]["content"].replace("<u>", "").replace("</u>", "")
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!= sentence
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):
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ADD_NEXT_SENTENCE = 0
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return sentences
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def create_word_scenes(raw_vtt, raw_script):
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subtitles = from_vtt(raw_vtt)
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scripts = [i for i in raw_script.split("\n") if i]
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print(
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f"Found {len(subtitles)} subtitles, {len(scripts)} scenes.\nTimestamping each words..."
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)
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scenes = []
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for n, script in enumerate(scripts):
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if len(script.split(" ")) == 1:
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continue
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scenes.append({"scene": script, "timestamp": []})
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scenes_cur = 0
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for n, subtitle in enumerate(subtitles):
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sentence = subtitle["content"].replace("<u>", "").replace("</u>", "")
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if len(sentence.split(" ")) == 1:
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continue
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if sentence != scenes[scenes_cur].get("scene"):
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if sentence == scenes[scenes_cur + 1].get("scene"):
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scenes_cur += 1
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else:
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raise Exception(
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f"Error, Failed to match sentence with scene.\n\"{scenes[scenes_cur].get("scene")}\" or \"[{scenes_cur+1}] {scenes[scenes_cur+1].get("scene")}\" != \"{sentence}\""
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)
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current_scene = scenes[scenes_cur]
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if current_scene["timestamp"]:
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word_idx = current_scene["timestamp"][-1]["index"] + 1
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else:
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word_idx = 0
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if ("<u>" not in subtitle["content"]) and word_idx >= len(sentence.split(" ")):
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# Ignore trailing dummy subtitle after last word indexed.
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pass
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if ("<u>" in subtitle["content"]) and word_idx >= len(sentence.split(" ")):
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# If there is trailing non-dummy timestamped subtitle, Reset word_idx and step to next scene. (Repeating sentence doesnt increment cur.)
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print(
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f"Error, Index wrong. {scenes_cur}, word: {word_idx}, total words: {len(sentence.split(" "))}\n{subtitle}"
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)
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word_idx = 0
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scenes_cur += 1
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current_scene = scenes[scenes_cur]
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if current_scene["timestamp"]:
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word_idx = current_scene["timestamp"][-1]["index"] + 1
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else:
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word_idx = 0
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print(f"Changed to {word_idx}, {scenes_cur}")
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# Start matching words.
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if "<u>" in subtitle["content"]:
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word = subtitle["content"].split("<u>")[1].split("</u>")[0]
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if word not in sentence.split(" "):
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raise Exception(f'Error, Mismatch\n=> "{word}" not in "{sentence}"')
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return
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try:
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assert sentence.split(" ")[word_idx] == word
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except:
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raise Exception(
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f'Error, Mismatch\n=> "{word}" != [{word_idx}] of "{sentence}"'
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)
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word_time = {
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"start": subtitle["start"],
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"end": subtitle["end"],
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"index": word_idx,
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"word": word,
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}
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current_scene["timestamp"].append(word_time)
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for scene in scenes:
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if len(scene["scene"].split(" ")) != len(scene["timestamp"]):
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raise Exception("Error, Scene length and timestamp length doesnt match.")
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if "" in scene["scene"].split(" "):
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print(repr(scene["scene"]))
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full_script, full_scenes = [], []
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for scene in scenes:
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full_script += scene["scene"].split(" ")[:-1]
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full_script.append(scene["scene"].split(" ")[-1] + "##")
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full_scenes += scene["timestamp"]
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for i, j in zip(full_script, full_scenes):
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if i.replace("##", "") != j["word"]:
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raise Exception("Error, Mismatch")
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return
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assert len(full_scenes) == len(full_script)
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return full_script, full_scenes
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def scene_from_new_script(raw_script, full_script, full_scenes):
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mod_script = raw_script.replace("\n", " \n ").split(" ")
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mod_script = [i for i in mod_script if i]
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n = 0
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while True:
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if mod_script[n] == "\n":
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mod_script[n - 1] += "\n"
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del mod_script[n]
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n -= 1
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n += 1
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if n == len(mod_script):
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break
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print(f"Original: {len(full_script)}, Modded: {len(mod_script)}")
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allowed_list = [".", "\n", "\n\n", ",", "?", "##"]
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def normalized(x):
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for i in allowed_list:
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x = x.replace(i, "")
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return x.upper()
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same = lambda a, b: normalized(a) == normalized(b)
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new_script, new_timestamp, orig_index, n = [], [], 0, 0
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fail = 0
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while n < len(mod_script):
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print(f"{repr(mod_script[n]):>20} ? {repr(full_script[orig_index])}")
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word = mod_script[n]
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if same(word, full_script[orig_index].replace("##", "")):
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cur = full_scenes[orig_index]
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new_script.append(word.replace("##", ""))
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new_timestamp.append({"start": cur["start"], "end": cur["end"]})
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fail = 0
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else:
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if fail > 10:
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raise Exception("Error: Failed to match words,")
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return
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fail += 1
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n -= 1
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n, orig_index = n + 1, orig_index + 1
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assert len(new_script) == len(new_timestamp)
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return new_script, new_timestamp
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def build_new_subtitle(new_script, new_timestamp):
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buffer, new_scenes, start, end = [], [], None, None
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current_scene = []
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for i, j in zip(new_script, new_timestamp):
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buffer.append(i.replace("\n", ""))
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if not start:
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start = j["start"]
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if "\n" in i:
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current_scene.append(
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{
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"content": " ".join(buffer).replace("##", ""),
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"start": start,
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"end": j["end"],
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}
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)
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buffer, start = [], None
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if "\n\n" in i:
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print(
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f"Section break at line #{len(current_scene):<3}| \"{current_scene[-1]["content"]}\""
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)
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new_scenes.append(current_scene)
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current_scene = []
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if start:
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buffer.append(i.replace("\n", ""))
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current_scene.append(
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{"content": " ".join(buffer), "start": start, "end": j["end"]}
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)
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if current_scene != (new_scenes[-1] if new_scenes else None):
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new_scenes.append(current_scene)
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newsub = []
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for n, i in enumerate(new_scenes):
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newsub += i
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if n < len(new_scenes) - 1:
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newsub.append(
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{"content": "Break", "start": None, "end": None, "split": True}
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)
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return newsub
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###
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def autobreak(lines, times):
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from datetime import timedelta
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def parsetime(time_str):
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minutes, seconds = time_str.split(":")
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seconds, milliseconds = seconds.split(".")
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td = timedelta(
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minutes=int(minutes), seconds=int(seconds), milliseconds=int(milliseconds)
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)
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return td
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script = []
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long_breaks = []
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tmark = parsetime("0:0.0")
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for i, j in zip(lines, times):
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tdiff = parsetime(j["start"]) - tmark
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tmark = parsetime(j["end"])
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if tdiff > parsetime("0:0.0"):
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long_breaks.append(tdiff)
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mean_break = parsetime("0:0.0")
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for i in long_breaks:
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mean_break += i / len(long_breaks)
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print(mean_break)
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script = ""
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tmark = parsetime("0:0.0")
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tmp = " "
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continous_line = 0
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for i, j in zip(lines, times):
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tdiff = parsetime(j["start"]) - tmark
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tmark = parsetime(j["end"])
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if tdiff > mean_break and tmp[-1] != ".":
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script += "\n"
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if tdiff >= mean_break and tmp[-1] == ".":
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script += "\n"
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continous_line = 0
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else:
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continous_line += 1
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script += i.replace("##", "")
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if i[-1] == ".":
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script += "\n"
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elif "##" in i:
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script += "\n"
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else:
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script += " "
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tmp = i
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return script
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############################################
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def saveFile(filename, data, override=False):
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if os.path.exists(filename) and not override:
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raise Exception(f"File {filename} already exists.")
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return
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with open(filename, "w") as f:
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f.write(data)
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def openFile(filename):
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if not os.path.exists(filename):
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raise Exception(f"File {filename} doesnt exists.")
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return
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with open(filename, "r") as f:
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data = f.read()
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if not data:
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raise Exception("Data empty.")
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return
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return data
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############################################
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if __name__ == "__main__":
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PROG = sys.argv[0].split("/")[-1]
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if len(sys.argv) not in (3, 4):
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print(
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f"""Usage: {PROG} [COMMAND] [FILES]...
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Commands:
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- script <VTT file> Generates script file from vtt file.
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- apply <VTT file> <script file> Applies new scripted file to create JSON file.
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- create <JSON file> Creates new vtt from given JSON.
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"""
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)
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sys.exit()
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COMMAND = sys.argv[1]
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if COMMAND not in ["script", "apply", "create"]:
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print("Error. Command not found.")
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sys.exit()
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print(f"-> {sys.argv}")
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if COMMAND == "script":
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FILE = sys.argv[2]
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if not os.path.exists(FILE):
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print(f"Input file doesnt exists.")
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sys.exit(-1)
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modfile = ".".join(scriptfile.split(".")[:-1]) + ".script"
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x = create_word_scenes(
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openFile(FILE), "\n".join(script_from_word_vtt(openFile(FILE)))
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)
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if not x:
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sys.exit(-1)
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full_script, full_scenes = x
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genscript = autobreak(full_script, full_scenes)
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saveFile(modfile, genscript)
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print(f"Saved script file {modfile}.")
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elif COMMAND == "apply":
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if len(sys.argv) != 4:
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print(f"Not sufficient input.")
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sys.exit()
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FILE1, FILE2 = sys.argv[2], sys.argv[3]
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if (not os.path.exists(FILE1)) or (not os.path.exists(FILE2)):
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print(f"Input file doesnt exists.")
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sys.exit(-1)
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x = create_word_scenes(
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openFile(FILE1), "\n".join(script_from_word_vtt(openFile(FILE1)))
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)
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if not x:
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sys.exit(-1)
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full_script, full_scenes = x
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x = scene_from_new_script(openFile(FILE2), full_script, full_scenes)
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if not x:
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sys.exit(-1)
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a, b = x
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final_sub = build_new_subtitle(a, b)
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jsonfile = ".".join(FILE1.split(".")[:-1]) + ".json"
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saveFile(jsonfile, json.dumps(final_sub, indent=2), True)
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print(f"Saved JSON file {jsonfile}.")
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sys.exit(0)
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elif COMMAND == "create":
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FILE = sys.argv[2]
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if not os.path.exists(FILE):
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print(f"Input file doesnt exists.")
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sys.exit(-1)
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final_vtt = json.loads(openFile(FILE))
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orgf = ".".join(FILE.split(".")[:-1])
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print(f"Saved VTT file as {orgf}.final.vtt.")
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if os.path.exists(orgf + ".vtt"):
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saveFile(orgf + ".stacked.vtt", to_stacked_vtt(final_vtt), True)
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else:
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saveFile(orgf + ".vtt", to_stacked_vtt(final_vtt), True)
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sys.exit(0)
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