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Starting yesterday, for some users, no YouTube videos can be played at all.
./yt-dlp.exe --no-check-certificate --no-cache-dir --rm-cache-dir -f "mp4[height<=?720][height>=?64][width>=?64]/best[height<=?720][height>=?64][width>=?64]" --get-url https://www.youtube.com/watch?v=zw7YzJybkRs
ERROR: [youtube] zw7YzJybkRs: Unable to extract uploader id; please report this issue on https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using yt-dlp -U
It looks like there is already a commit made to yt-dlp that should fix this: https://github.com/yt-dlp/yt-dlp/issues/6247
YouTube is probably progressively rolling this change out, in which case soon all users will be affected.