Veo 3.1 (Quality / Fast)

Overview

Two Veo routes are currently configured:

• Veo 3.1 Quality (veo3)
• Veo 3.1 Fast (veo3_fast)

Both support first/last-frame control and video extend mode.

Generation modes (generationMode)

• FIRST_LAST_FRAMES: control start/end with 1-2 images
• EXTEND: continue from an input video
• REFERENCE_2_VIDEO: available on veo3_fast with 1-3 reference images

Inputs

• prompt (required)
• referenceImage (optional, max 2 or 3 depending on route/mode)
• referenceVideo (used in EXTEND)

Parameters

• aspectRatio: 16:9 / 9:16
• generationMode: as above
• resolution: currently configured as 720p

Tips

• For speed, start with Veo Fast.
• For state-transition shots, use first/last-frame mode.
• For continuation shots, use EXTEND with a source video.