Add your voice once on the Voices page: record or upload 10 to 20 seconds of yourself talking, and confirm it is your own voice. Then pick "Your voice" when you dub a video or read text aloud. Your voice can speak English, Spanish, French, German, Italian and Portuguese, whatever language you recorded in.
Adding your voice is free. Dubbing is 2 credits a minute (plus 1 to transcribe and 1 to translate the video); reading text aloud is 2 credits a minute of audio.
Between 10 and 30 seconds; 10 to 20 seconds of natural talking works best.
Not yet: your voice speaks the six languages above. For other languages, use one of the AI voices.
No. The last voice you used is your default, and you can set the default on the Voices page.