From eb8f285b3952858654b0171c536dc6f78f3ff9bb Mon Sep 17 00:00:00 2001
From: Ziwen <67124639+zw123han@users.noreply.github.com>
Date: Wed, 17 May 2023 23:19:40 -0400
Subject: [PATCH 1/2] Fix prefix bug when timestamps enabled

---
 whisper/decoding.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/whisper/decoding.py b/whisper/decoding.py
index 457ee7c..7904d46 100644
--- a/whisper/decoding.py
+++ b/whisper/decoding.py
@@ -586,6 +586,8 @@ class DecodingTask:
             if self.sample_len is not None:
                 max_prefix_len = self.n_ctx // 2 - self.sample_len
                 prefix_tokens = prefix_tokens[-max_prefix_len:]
+            if not self.without_timestamps:
+                tokens = tokens + [self.tokenizer.timestamp_begin]
             tokens = tokens + prefix_tokens
 
         if prompt := self.options.prompt:

From 5b16d67519db848a2bc2fccbffab2d785959d4c6 Mon Sep 17 00:00:00 2001
From: Ziwen <67124639+zw123han@users.noreply.github.com>
Date: Wed, 17 May 2023 23:20:53 -0400
Subject: [PATCH 2/2] Update decoding.py

---
 whisper/decoding.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/whisper/decoding.py b/whisper/decoding.py
index 7904d46..d5a4660 100644
--- a/whisper/decoding.py
+++ b/whisper/decoding.py
@@ -586,7 +586,7 @@ class DecodingTask:
             if self.sample_len is not None:
                 max_prefix_len = self.n_ctx // 2 - self.sample_len
                 prefix_tokens = prefix_tokens[-max_prefix_len:]
-            if not self.without_timestamps:
+            if not self.options.without_timestamps:
                 tokens = tokens + [self.tokenizer.timestamp_begin]
             tokens = tokens + prefix_tokens