chore: backup before migration to new repo

scripts/asr_processor.py

@@ -65,12 +65,20 @@ def run_asr(video_path, output_path, uuid: str = ""):
     if publisher:
         publisher.info("asr", "Loading Whisper model...")
 
-    model = WhisperModel("tiny", device="cpu", compute_type="int8")
+    # Use small model with CPU (MPS not supported by faster_whisper)
+    # small 模型在準確率和速度間取得最佳平衡
+    model = WhisperModel("small", device="cpu", compute_type="int8")
 
     if publisher:
         publisher.info("asr", f"Transcribing: {video_path}")
 
-    segments, info = model.transcribe(video_path, beam_size=5)
+    # Transcribe with VAD filter for better accuracy
+    segments, info = model.transcribe(
+        video_path,
+        beam_size=5,
+        vad_filter=True,
+        vad_parameters=dict(min_silence_duration_ms=500, speech_pad_ms=200),
+    )
 
     if publisher:
         publisher.info("asr", f"ASR_LANGUAGE:{info.language}")