can we generate thunbnail with hook ot caption via api

Hello HeyGen Support Team,

I’m currently generating videos via the HeyGen API and wanted to ask about thumbnail / cover image options.

After a video is created through the API:

Is there a native way within HeyGen to automatically generate a thumbnail (cover image) for that video?
Can the thumbnail be returned via the API together with the video URL?
Is it possible to customize the thumbnail, such as:
- Selecting a specific frame from the video
- Adding text overlays (headline, title, hook text) on the cover image

If HeyGen does not currently support thumbnail generation with text via API:

Do you recommend a specific workflow or integration (third-party tools or services) to generate thumbnails from HeyGen videos?

Our goal is to fully automate the pipeline:
API video generation → thumbnail creation (with text) → publishing (YouTube, social media).

Thank you in advance for your guidance.

Best regards,