Add options to prevent download if sponsorblock entry not found

[ConorShore]

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Checklist

• I'm requesting a feature unrelated to a specific site
• I've looked through the README
• I've verified that I have updated yt-dlp to nightly or master (update instructions)
• I've searched known issues and the bugtracker for similar issues including closed ones. DO NOT post duplicates
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Hi,

A great feature to add would be the ability to prevent a download if sponsorblock info is not found. In my setup, I check a channels a few times a day ( and don’t download videos younger than a day old) and the sponsor block info isn’t updated in time.

Given at the moment it seems sponsorblock is checked after download, if the sponsorblock check finds nothing it could delete the file. This obviously isn’t the most efficient so the check could come before the download. Not familiar with the codebase so don’t know how hard this would be.

Provide verbose output that clearly demonstrates the problem

• Run your yt-dlp command with -vU flag added (yt-dlp -vU <your command line>)
• If using API, add 'verbose': True to YoutubeDL params instead
• Copy the WHOLE output (starting with [debug] Command-line config) and insert it below

Complete Verbose Output

N/A

No response

[pukkandan]

I believe it can already be done with --match-filter. Pls provide some examples I can test commands on