Specify the format you want the video file to be in to me after ordering or it will be .MP4 by default.
Both have the following character limits (You can choose if you want a subtitle or not):-
Title: Max 20 Characters
Subtitle: Max 20 Characters
Specify which version you want V1 or V2 in the order details or check out 'Premium' package. V1 will be given by default if you don't specify any version and you will not be allowed a revision.