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Update youtube.py

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Classic298 2025-05-06 16:16:58 +02:00 committed by GitHub
parent 67a612fe24
commit 5e1cb76b93
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1 changed files with 11 additions and 25 deletions
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36
backend/open_webui/retrieval/loaders/youtube.py
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@ -101,8 +101,16 @@ class YoutubeLoader:
log.exception("Loading YouTube transcript failed")
return []
# Make a copy of the language list to avoid modifying the original
languages_to_try = list(self.language)
# Add English as fallback, if not already in the list
if "en" not in languages_to_try:
log.debug("Adding English as fallback language")
languages_to_try.append("en")
# Try each language in order of priority
for lang in self.language:
for lang in languages_to_try:
try:
transcript = transcript_list.find_transcript([lang])
log.debug(f"Found transcript for language '{lang}'")
@ -121,29 +129,7 @@ class YoutubeLoader:
log.info(f"Error finding transcript for language '{lang}'")
raise e
# If all specified languages fail, fall back to English (unless English was already tried)
if "en" not in self.language:
try:
log.debug("Falling back to English transcript")
transcript = transcript_list.find_transcript(["en"])
transcript_pieces: List[Dict[str, Any]] = transcript.fetch()
transcript_text = " ".join(
map(
lambda transcript_piece: transcript_piece.text.strip(" "),
transcript_pieces,
)
)
return [Document(page_content=transcript_text, metadata=self._metadata)]
except NoTranscriptFound:
log.warning("No English transcript found as fallback")
except Exception as e:
log.exception("Error finding English transcript fallback")
raise e
# All languages failed
languages_tried = ", ".join(self.language)
if "en" not in self.language:
languages_tried += ", en (fallback)"
# If we get here, all languages failed including the English fallback
languages_tried = ", ".join(languages_to_try)
log.warning(f"No transcript found for any of the specified languages: {languages_tried}")
raise NoTranscriptFound(f"No transcript found for any supported language")