It failed entirely. I tried about 3 times and gave up. It doesn't tell me which server it failed on.

I'm guessing nostr band but then primal doesn't tell you the max file size unless you know. My file size was 64MB.

I noticed on the 3rd time, it tried to upload to a different blossom server but failed. I don't know which one it fails

Maybe it failed to both? I don't know what the limit of the other 2 blossom servers is except blossom band.

I then right away uploaded a much smaller video and it uploaded with no issues.