diff --git a/twitter2bsky.py b/twitter2bsky.py
index b6be625..a4c57be 100644
--- a/twitter2bsky.py
+++ b/twitter2bsky.py
@@ -2714,6 +2714,10 @@ def download_and_crop_video(video_url, output_path):
             return None
 
         end_time = min(VIDEO_MAX_DURATION_SECONDS, duration)
+        # Guard against floating-point precision errors where end_time == duration
+        # causes MoviePy to reject the subclip as out of bounds
+        end_time = min(end_time, duration - 0.05)
+        end_time = max(end_time, 0.1)  # safety: never go negative or zero
 
         video_clip = VideoFileClip(temp_input)
         try: