I am encountering difficulties when running the executable programs (ffmpeg and yt-dlp portable). The error log is as follows:
Error opening input: Invalid data found when processing input Error opening input file -. Error opening input files: Invalid data found when processing input
Try printing ( with log) the command you are trying to execute, run it in a seperate command line to see if it's working properly.
since it's related to input I am suspecting the problem is with the youtube url you are providing
If you want the second folder to stay updated with the potential changes that appear in the original folder after working with it, then yes, you would need to copy it again.