util to take a footy mpeg and with appropriate "trimmed" start/end times, it will work out the ffmpeg line as a start and duration

duration_diff

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+#!/usr/bin/env python3
+
+import argparse
+from datetime import datetime
+
+def time_difference(time1, time2):
+    # Define the time format
+    time_format = "%H:%M:%S"
+    
+    # Convert strings to datetime objects
+    t1 = datetime.strptime(time1, time_format)
+    t2 = datetime.strptime(time2, time_format)
+    
+    # Calculate the difference between the two times
+    delta = t2 - t1 if t2 > t1 else t1 - t2
+    
+    # Extract total seconds from the timedelta object
+    total_seconds = int(delta.total_seconds())
+    
+    # Calculate hours, minutes, and seconds from the total seconds
+    hours, remainder = divmod(total_seconds, 3600)
+    minutes, seconds = divmod(remainder, 60)
+    
+    # Return the formatted time difference with leading zeros
+    return f"{hours:02}:{minutes:02}:{seconds:02}"
+
+if __name__ == "__main__":
+    # Set up command-line argument parsing
+    parser = argparse.ArgumentParser(description="Calculate the difference between two times in hh:mm:ss format.")
+    
+    # Add positional arguments for the two time durations
+    parser.add_argument("time1", type=str, help="The first time in hh:mm:ss format")
+    parser.add_argument("time2", type=str, help="The second time in hh:mm:ss format")
+    parser.add_argument("video", type=str, help="video")
+    
+    # Parse the command-line arguments
+    args = parser.parse_args()
+    
+    # Calculate and print the time difference
+    difference = time_difference(args.time1, args.time2)
+    print(f"Difference: {difference}")
+    print(f"ffmpeg -ss {args.time2} -i {args.video} -to {difference} -c copy output.mp4")