Feel free to contact us if you have questions, or would like to work together, contact@motionbear.io
We use Paypal to process your payment. It's the same payment provider used by products such as Udemy, Lyft, and Patreon. We do not handle your credit card information directly.
This largely depends on the audio quality of the video. But because you can still check and adjust the subtitles before they are delivered, the output is always the way you want.