update threshold

app.py

@@ -736,7 +736,7 @@ class WhisperTranscriber:
             coverage_ratio = total_coverage / (d_end - d_start)
             is_well_covered = coverage_ratio >= 0.85  # 85% or more covered
 
-            if not is_well_covered and (d_end - d_start) > 1.5:  # If poorly covered, add to unmatched list
+            if not is_well_covered and (d_end - d_start)*(1-coverage_ratio) > 1.5:  # If poorly covered, add to unmatched list
                 unmatched_diarization_segments.append({
                     "start": d_start,
                     "end": d_end,