Your co-worker was creating a direct translated copy of the original material, whereas in this case it's a caption which is only really usable in conjunction wi

Your co-worker was creating a direct translated copy of the original material, whereas in this case it's a caption which is only really usable in conjunction with the original. I think the problem would be if you were actually distributing the original video along with the caption, but in this case only the user-created caption is changing hands. See eg Rifftrax