How do I render a long video?

Produce a video longer than a single engine window. Job to be done: state a target duration or beat list so EdgeCut sizes one extend_chain instead of a short single.

Kling singles go roughly to ~15s; Veo singles are shorter (up to ~10s at 720p). Anything clearly longer — or a multi-panel storyboard animation — becomes one extend_chain job with a target total duration. The UI shows one loader for the whole chain. Credits scale with duration / segment count — check the approval card.

1. Decide whether you need a storyboard grid first (recommended for multi-shot ads).

2. Ask clearly: “about 45 seconds”, or paste a full script / beat list.

3. Pick or accept a model path (Veo Extend vs Kling Magic Extend) based on look and audio needs.

4. Confirm the approval card for the full chain cost.

5. Wait for the single chain job to finish; download from the gallery when complete.

State the duration (“about 45 seconds”) or provide a full script / beat list. For spoken lines, longer scripts need more seconds so words are not cut off. Vague “make it longer” without a target forces the agent to guess.

Most short requests should stay a single render. Free EdgeCut AI (opt-in) is not a substitute for a long paid chain. Keep Elements/@mentions consistent across beats. For lip sync on a finished clip, use Lip Sync studio on the asset.

Duration planning: Creative Director + these articles. Missing credits after a failed long chain: /help or support@edgecut.ai (see Refunds and failed jobs).