[youtube] Availability tag doesn't work as intented about yt-dlp HOT 4 OPEN

add --ignore-no-formats-error to your command for the videos that error

video_not_available
video_not_available_copyright

these are not documented/valid values for availability

from yt-dlp.

public
unlisted
NA
NA
NA
needs_auth

private is neither working
but at least we have NA

Regarding:
video_not_available
video_not_available_copyright

Yes these are not documented, but since it can be measured what is the availability as seen by the error message, I think those cases should be handled as well by the "availability" print option.

from yt-dlp.

Availability is not meant to detect unavailable videos, but to distinguish private vs public etc for videos that yt-dlp can process. From your examples, the private video can potentially be fixed (Related #9835), but others are out of scope

from yt-dlp.

Is there an option to add another tag then to distinguish unavailable videos since the error message already shows the needed information? It could be useful in the same way like private videos so you could check which videos cannot be downloaded and why. Just a suggestion not a necessity the "private" status in availability is the main issue which stopped working.

from yt-dlp.