Query about the conversion of the database encoding to Utf-8

[syriasat]

Hello.

I would like to convert the database encoding from latin1 to utf-8

I Use for this process "vCC 2.0 beta 3 released"

http://www.vcharset.com/vcc-2-beta-3-released-pid22.html

, But the problem is that the process was not completed and stopped at the table Datastore

and This picture shows state the table before the start of conversion

What can I do at this time?

What the better encoding , latin1 or utf-8 ?