import subprocess

# prompt user for input video
input_file = input("Enter the input video file name: ")

# set overlay file
overlay_file = "overlay.mp4"

# Append output file with -vhs
output_file = input_file+"-vhs.mp4"

# run ffmpeg command to resize the video to 480x480, add overlay, and create VHS effect
ffmpeg_command = f"ffmpeg -i {input_file} -i {overlay_file} -filter_complex \
'[0:v]scale=480:480[v]; [1:v]scale=480:480[i]; [v][i]overlay[out]; \
[out]curves=vintage,curves=preset=vintage,curves=vintage[out]' -map '[out]' {output_file}"

# execute the ffmpeg command
subprocess.run(ffmpeg_command, shell=True)