Access Zoom video

Good Morning! I attended a Zoom meeting and was not the host.  I requested a copy of the video from the host and they are not sharing.  I need the video for a legal case that I have & I need to know if Zoom can access the recording? I will have to subpoena the video when we go to court.  I need to be sure that they do not edit or modify the video.  What will I need to do to access the copy.  

Best Regards,