From fb5395a523a140872456a6c76e90af83a0f0476f Mon Sep 17 00:00:00 2001
From: Christopher Oezbek <c.oezbek@gmail.com>
Date: Fri, 4 Jul 2025 14:24:02 +0200
Subject: [PATCH] Support for outputting .srt format

---
 scripts/stt_from_file_pytorch.py | 36 ++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/scripts/stt_from_file_pytorch.py b/scripts/stt_from_file_pytorch.py
index d4b4dc0..f8cdc69 100644
--- a/scripts/stt_from_file_pytorch.py
+++ b/scripts/stt_from_file_pytorch.py
@@ -32,6 +32,29 @@ class TimestampedText:
     def __str__(self):
         return f"{self.text} ({self.timestamp[0]:.2f}:{self.timestamp[1]:.2f})"
 
+def _seconds_to_srt_time(seconds: float) -> str:
+    """Converts seconds to SRT time format HH:MM:SS,mmm or HH:MM:SS.mmm."""
+    hours = int(seconds // 3600)
+    minutes = int((seconds % 3600) // 60)
+    seconds = seconds % 60
+    milliseconds = int((seconds - int(seconds)) * 1000)
+    return f"{hours:02}:{minutes:02}:{int(seconds):02},{milliseconds:03}"
+
+@dataclasses.dataclass
+class TimestampedTranscript:
+    segments: list[TimestampedText]
+    
+    def __str__(self) -> str:
+        """Formats the transcript into an SRT (SubRip) file content."""
+        srt_chunks = []
+        for i, segment in enumerate(self.segments, 1):
+            start_time = _seconds_to_srt_time(segment.timestamp[0])
+            end_time = _seconds_to_srt_time(segment.timestamp[1])
+            text = segment.text.strip()
+
+            srt_chunks.append(f"{i}\n{start_time} --> {end_time}\n{text}\n")
+
+        return "\n".join(srt_chunks)
 
 def tokens_to_timestamped_text(
     text_tokens,
@@ -189,8 +212,12 @@ def main(args):
         offset_seconds=int(n_prefix_chunks / mimi.frame_rate) + audio_delay_seconds,
     )
 
-    decoded = " ".join([str(t) for t in timed_text])
-    print(decoded)
+    if args.srt:
+        transcript = TimestampedTranscript(segments=timed_text)
+        print(transcript)
+    else:
+        decoded = " ".join([str(t) for t in timed_text])
+        print(decoded)
 
 
 if __name__ == "__main__":
@@ -216,6 +243,11 @@ if __name__ == "__main__":
         default="cuda",
         help="Device on which to run, defaults to 'cuda'.",
     )
+    parser.add_argument(
+        "--srt",
+        action="store_true",
+        help="Prints the transcript in SRT format.",
+    )
     args = parser.parse_args()
 
     main(args)