A program in python to download a list of youtube videos

The Task expected from the Python code:
1) reading a CSV file from a given folder on Windows that contains a list of Youtube video ids.
2) Using yt-dlp to download each relevant video in VP9 compression at 144p in either format WEBm or MKV packages as required.
3) Either the video needs to be downloaded however possible or provide the correct reason for it being unobtainable from Youtube.
E.g. If the Video is geographically restricted, use a prepared proxy to download it from the relevant region.
3) log the video ids that are unobtainable along with the main reason for it in a text file
4) Name each downloaded video file according to this convention: VF_"video id"."WebM or MKV and save it in a given Folder.

You need to be well-versed in yt-dlp library
You need t understand different video codecs, audio codecs, and their packaging.
If you don't understand either of the above please do not apply. I will be asking specific questions and you need to be able to answer them within 15 minutes. PLEASE if you can't answer the question remove yourself from the list of applicants.
No chat-gbt code unless you have already tested it yourself and proved it to be a complete working code.
You will have a week from the date of the beginning of the contract.
Here is the question that over 40 applicants have failed to answer.
There is just one answer if you are not sure don't guess and waste my time
How do you choose which video file extension to use when executing the final download command?