Update app.py

app.py

@@ -86,7 +86,7 @@ def interpolate_video_frames(input_file_path, output_file_path, output_fps=10, d
     # Construct the ffmpeg command for interpolation
     cmd = [
         'ffmpeg',
-        '-i', file_path,  # input file
+        '-i', input_file_path,  # input file
         '-filter:v', f'minterpolate=fps={output_fps}',  # minterpolate filter options
         '-r', str(output_fps),  # output frame rate
         output_file_path  # Output file