AI text to video: The quota that you can use to create AI-generated videos.
AI text to image: The quota that you can use for creating Al-generated images.
Text to speech: The total character limit for text-to-speech conversion.
AI script: The quota that you can use for AI script.
Auto subtitle: The maximum transcription time available in the billing period.
Remove image background: Quotas you have for removing image backgrounds. Quotas will be deducted after successfully removing the background.
Translate: The total character limit for translation.
In short, credits/quota are the number of times or limits you can use each AI feature. Check more details here: https://www.flexclip.com/pricing.html