Each plan has a limit on the number of credits you’re allotted in a certain timeframe. Use of Subtitles, dubbing, and voiceover count towards your credit Usage. For example, if you subtitle an English 30-minute video this will count as 30 credits toward your usage. If you then translate it from English to Spanish, this will add another 30 credits. If you dub your English Video to Spanish another 30 credits will be used. So the total amount of credits used is 90.