Image → Videokling-v2.1kling-v2.1-std-i2v
Kling v2.1 Standard (I2V)
Budget-tier image-to-video. Static / dynamic mask support for region-targeted motion, plus special-FX modes (hug, kiss, melt, etc.). No native audio.
Kling guideVerified
Kuaishou's video model. The strongest motion in the open API ecosystem — fluid human bodies, action choreography, dramatic camera moves. v3.0 Pro is the flagship.
Strengths
- Best-in-class human and animal motion fidelity — runners, dancers, fighters look anatomically right.
- Action choreography: martial arts, sports, combat scenes hold together over the full clip.
- Camera moves: smooth dollies, crane shots, orbits without warping the subject.
- Native multi-shot mode in v3 (the API exposes it as multi_prompt).
- Long context for prompts — accepts dense scene descriptions without losing the lead subject.
Weaknesses
- Text rendering inside images is unreliable — avoid signs / readable writing.
- Hands and fingers can still distort on fast motion.
- Output durations capped at ~10s per single clip (use multi-shot to extend).
- Slow vs. fast tiers vary a lot in quality; Standard is often blurry compared to Pro.
Best for
- Action sequences, fight choreography, sports highlights
- Anime / OVA-style narrative shots (pairs well with the Anime Styles panel)
- Music video moments — performers, dancers, crowd shots
- Camera-heavy cinematic establishing shots
Avoid for
- Tight close-ups with text (logos, signs, captions)
- Long single-shot videos beyond ~10s — use multi-shot instead
Prompting tips
- Lead with the subject + action, then describe the camera move, then the lighting and mood.
- Be explicit about motion verbs — "runs", "jumps", "pivots", "orbits" — Kling rewards specificity.
- For consistent characters across shots, repeat the same description verbatim each shot.
- Use "cinematic" / "35mm anamorphic" / "golden hour" trailing tags — Kling respects them.
- Avoid abstract direction ("epic", "amazing") — replace with concrete cinematography.
Parameter tips
- Duration: 5s is the sweet spot. 10s costs a lot more and often introduces drift.
- Aspect ratio: 16:9 is what Kling was trained on; 9:16 works but loses some quality.
- Pro vs Standard: always pick Pro for finals. Use Standard only for cheap drafts.
Style packs — paste before any prompt
90s OVA cell-shaded
anime cel-shaded, 90s OVA aesthetic, hand-drawn line art, soft halation, 35mm grain
Cinematic noir
noir high contrast, chiaroscuro lighting, anamorphic lens, smoke and rain, desaturated teal-orange
Parameters
- image_urlstringNo description.
- durationstringNo description.510default: 5
- aspect_ratiostringNo description.16:99:161:1default: 16:9
- negative_promptstringNo description.default: blur, distort, and low quality
- cfg_scalenumberNo description.default: 0.5range: 0 … 1
- static_mask_urlstringMask defining the region to animate (greyscale).
- dynamic_mask_urlstringMask defining how motion evolves over time.
- special_fxstringPreset motion templates (e.g. hug, kiss, melt). Overrides freeform prompt.
- input_image_urlsarrayUp to a few extra reference frames for multi-image guidance.