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Delete utilities/transcript_loader.py
Browse files- utilities/transcript_loader.py +0 -114
utilities/transcript_loader.py
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import os
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import webvtt
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import re
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from datetime import datetime
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from llama_index import Document
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class VTTTranscriptLoader:
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"""
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vtt file ingestion and cleaning. This was done because vtt files
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are not recognized by llamaindex. The output should mirror that of
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any document loader from llamaindex or langchain.
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"""
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def __init__(self, file_path):
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self.fp = file_path
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self.data = None
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def open_vtt(self, file_path, plaintext=True):
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"""Read VTT file."""
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if plaintext:
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with open(file_path, "r") as f:
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data = f.readlines()
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else:
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data = webvtt.read(file_path)
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return data
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def extract_speaker_name(self, text):
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"""Extracts the speaker name from a VTT caption."""
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match = re.search(r"<v (.*?)>", text)
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if match:
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return match.group(1)
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else:
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return None
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def extract_speaker_words(self, captions):
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"""Extracts the speaker text from a VTT caption."""
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return [caption.text for caption in captions]
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def merge_speaker_words(self, words, speakers, split=True):
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"""Joins speaker names with their words."""
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# Extract speaker names
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speaker_list = [self.extract_speaker_name(line) for line in speakers if self.extract_speaker_name(line)]
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# Extract words
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words_list = self.extract_speaker_words(words)
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# Combine speaker names and words
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combined_list = list(zip(speaker_list, words_list))
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# Return the combined list as a single string if split is False
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if not split:
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combined_list = '\n'.join([f"{name}: '{text}'" for name, text in combined_list])
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return combined_list, speaker_list
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def get_metadata(self, speaker_list, file_path):
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"""Generates metadata for the transcript."""
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# Meeting length
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time_format = "%H:%M:%S.%f"
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sess = self.open_vtt(file_path, plaintext=False)
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dt1 = datetime.strptime(sess[0].start, time_format)
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dt2 = datetime.strptime(sess[-1].end, time_format)
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minutes = (dt2 - dt1).seconds / 60
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# Meeting date
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match = re.search(r"\d{4}[-_]\d{2}[-_]\d{2}", file_path)
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if match:
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date_str = match.group().replace('_', '-')
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date_obj = datetime.strptime(date_str, "%Y-%m-%d").date()
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else:
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date_obj = None
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# Pull dictionary here
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output = {
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'title': file_path,
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'duration': minutes,
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'meeting_date': date_obj.strftime("%Y-%m-%d"),
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'speakers': list(set(speaker_list)),
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}
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return output
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def manual_document(self, output, metadata):
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"""Create document manually"""
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document = Document(text=output)
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document.metadata = metadata
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return document
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def process_file(self, file_path):
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"""Processes a single VTT file and returns the combined speaker names and words."""
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# Get words as webvtt captions
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words = self.open_vtt(file_path, plaintext=False)
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# Get speaker lines as plaintext
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speaker = self.open_vtt(file_path, plaintext=True)
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# Combine speaker names and words
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output, speaker_list = self.merge_speaker_words(words, speaker, split=False)
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# Get session data as dictionary
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metadata = self.get_metadata(speaker_list, file_path)
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return self.manual_document(output, metadata)
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def load(self):
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"""Processes all VTT files in the directory or the single file and returns a list of results."""
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results = []
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if os.path.isdir(self.fp):
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for root, _, files in os.walk(self.fp):
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for file in files:
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if file.endswith('.vtt'):
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file_path = os.path.join(root, file)
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transcript = self.process_file(file_path)
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results.append(transcript)
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else:
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transcript = self.process_file(self.fp)
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results.append(transcript)
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return results
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