diff --git a/sentence_api/main.py b/sentence_api/main.py
index 6c34336..c1173af 100644
--- a/sentence_api/main.py
+++ b/sentence_api/main.py
@@ -566,7 +566,7 @@ def _align_share_audio(audio_path: Path, target_seconds: float, transcriber: Tra
         start_seconds = max(0.0, min(segment.start_seconds for segment in speech_segments) - 0.05)
         end_seconds = min(
             _media_duration_seconds(audio_path),
-            max(segment.end_seconds for segment in speech_segments) + 0.08,
+            max(segment.end_seconds for segment in speech_segments) + 0.58,
         )
         if end_seconds <= start_seconds + 0.1:
             return
@@ -575,7 +575,8 @@ def _align_share_audio(audio_path: Path, target_seconds: float, transcriber: Tra
             "silenceremove=start_periods=1:start_threshold=-45dB:start_silence=0.03"
         ]
         if target_seconds > 0.2:
-            speed_factor = (end_seconds - start_seconds) / target_seconds
+            speech_seconds = max(0.1, end_seconds - start_seconds - 0.5)
+            speed_factor = speech_seconds / target_seconds
             if 0.5 <= speed_factor <= 2.0:
                 filters.append(f"atempo={speed_factor:.6f}")