refac

backend/open_webui/env.py

@@ -517,6 +517,11 @@ PASSWORD_VALIDATION_HINT = os.environ.get('PASSWORD_VALIDATION_HINT', '')
 
 BYPASS_MODEL_ACCESS_CONTROL = os.environ.get('BYPASS_MODEL_ACCESS_CONTROL', 'False').lower() == 'true'
 
+# When enabled, skips pydub-based preprocessing (format conversion, compression,
+# and chunked splitting) before sending files to processing engines. Useful when
+# the upstream provider handles these steps or when ffmpeg is unavailable.
+BYPASS_PYDUB_PREPROCESSING = os.environ.get('BYPASS_PYDUB_PREPROCESSING', 'False').lower() == 'true'
+
 # When disabled (default), the OpenAI catch-all proxy endpoint (/{path:path})
 # is blocked. Enable only if you need direct passthrough to upstream OpenAI-
 # compatible APIs for endpoints not natively handled by Open WebUI.

backend/open_webui/routers/audio.py

@@ -54,6 +54,7 @@ from open_webui.env import (
     AIOHTTP_CLIENT_SESSION_SSL,
     AIOHTTP_CLIENT_TIMEOUT,
     AIOHTTP_CLIENT_TIMEOUT_MODEL_LIST,
+    BYPASS_PYDUB_PREPROCESSING,
     DEVICE_TYPE,
     ENABLE_FORWARD_USER_INFO_HEADERS,
 )
@@ -1098,6 +1099,10 @@ def transcription_handler(request, file_path, metadata, user=None):
 def transcribe(request: Request, file_path: str, metadata: Optional[dict] = None, user=None):
     log.info(f'transcribe: {file_path} {metadata}')
 
+    if BYPASS_PYDUB_PREPROCESSING:
+        log.info('Bypassing pydub preprocessing (BYPASS_PYDUB_PREPROCESSING=true)')
+        chunk_paths = [file_path]
+    else:
         if is_audio_conversion_required(file_path):
             file_path = convert_audio_to_mp3(file_path)