Getting a transcript from youtube videos

I am building a scenario where I want to get a text summary from youtube videos.

I have a google sheet first,once i add a new url in a row, the scenario starts by taking the url and using cloudconverter to convert the video into a mp3 so that i can have Chatgpt making a summary from this mp3.

the issue is the scenario seems to continue while it’s still processing the conversion to mp3.

Consequently I don’t get the file in the chatgpt and it returns nothing.

How can I make sure the conversion tasks is completed before running the next modules.

I don’t want a timer because we don’t know even after the timer if the job is done or not.

I would like to use the webhook from clouconverter(there is one that can be used to return “job finished from tasks) because i don’t understand how to implement it so that the scenario resumes once he received that webhook.

I hope I am describing clearly what is expected.

Thank you for your help