Do I have to provide both a first and a last frame?
Yes. First/Last is built to transition between two images; both are required. Use standard Veo 3.1 for pure text/image → video runs.
How long can these clips be?
Up to ~8 seconds in the underlying APIs. MaxVideoAI exposes 4/6/8s presets to keep prompts predictable.
Does it always generate audio?
You choose audio on/off per render. Audio on gives native ambience/SFX/VO; audio off is cheaper and ready for your own soundtrack.
Can I use First/Last for logo or UI transitions?
Yes. It’s ideal for animating logos or UI layouts from an initial design to a final one. Keep critical tiny text as post-production graphics.
When should I use normal Veo instead?
Use standard Veo 3.1 / Veo Fast when you don’t have fixed start/end frames or need multi-beat clips from text/image input.