abort find_alignment on empty input (openai#1090)

ilanit1997 · May 16, 2023 · 11242f3 · 11242f3
1 parent bf1873f
commit 11242f3
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/whisper/timing.py b/whisper/timing.py
@@ -170,6 +170,9 @@ def find_alignment(
     medfilt_width: int = 7,
     qk_scale: float = 1.0,
 ) -> List[WordTiming]:
+    if len(text_tokens) == 0:
+        return []
+
     tokens = torch.tensor(
         [
             *tokenizer.sot_sequence,