--- name: kling-4-action-montage description: >- Turn three or four key frames into a 30-second action montage with Kling 4 (kling_v4): a breakdance battle, BMX or skate tricks, a scooter or bike chase through traffic, parkour or a sports highlight, with a crash or punchline at the end. A one-line prompt over strong stills, "no slow motion", the trick names, the end state as the last still, and how to pick the usable seconds. Includes a tested varg call with the reference route pinned. Use when someone wants an AI action montage, a dance or trick sequence, an extreme sports clip, a chase, a "fail" ending, or fast-cut energy in one Kling 4 generation. For a full story use kling-4-keyframe-film; for prompt rules use kling-4-prompting. license: MIT metadata: author: vargHQ version: "1.0.0" openclaw: requires: anyBins: - curl homepage: https://varg.ai/how-to compatibility: >- Needs a VARG_API_KEY with curl (see the varg-ai skill) or the varg MCP connection (https://mcp.varg.ai/mcp). ffmpeg to cut the pieces you keep. allowed-tools: Bash(curl:*) Bash(jq:*) Bash(ffmpeg:*) Bash(ffprobe:*) Read Write Edit --- # A 30-second action montage from key frames on Kling 4 Kling 4 knows what a tail whip, a head spin or a freeze looks like and can string several of them into one 30-second take with its own cuts, camera moves and sound. What it needs from you is the look and the key poses, as stills. The prompt can be one line. This is how the breakdance, scooter and BMX sequences in fal's Kling 4 Halloween film were made ([YouTube, 2026-10-30](https://www.youtube.com/watch?v=WzXKggH-0Io)): "really high level prompt, but extremely guided visually". Generation runs on varg: REST `https://api.varg.ai/v2` (the `varg-ai` skill) or the MCP server `https://mcp.varg.ai/mcp`. ## 1. Ask, then go - **Action:** breakdance, BMX, skate, scooter, parkour, a chase, a sport. Name 2–3 moves (tail whip, bar spin, ollie, head spin, freeze). - **Place:** a real spot with a look (a park arch, bridge banks, a hill with tram rails). - **Ending:** a landing, a crash, a reaction line ("Sick run, want to go again?"), or none (a pure loop of moves). - **Frame:** 21:9 for a film, 9:16 for Reels and TikTok. Lens: ultra-wide fisheye is the classic sports-video look. - **Cost:** 30 s at 1080p ≈ $7.05 (705 credits); 15 s at 720p ≈ $2.36. Expect to keep 5–12 s from a take. ## 2. Three or four stills Make them on `gpt_image_2_5` with the character and look references ("Image 1 is the rider to match exactly…", see `kling-4-prompting` section 4). Pick: | Still | What it fixes | |---|---| | 1. The opening pose | Look, lens, crowd, where the camera is | | 2. A peak move (mid-air, upside down) | The hardest pose, so Kling does not invent it | | 3. A second move or angle (overhead, from behind) | Variety; Kling cuts between the angles | | 4. The end state (the crash, the landing, the reaction) | Where the take has to arrive | Rules from the film: - **Clean anatomy and gear in every still.** A BMX with no seat and a missing peg in the middle still made that trick the weakest part of the take; the take-off from a clean still was "really good". - Ask for motion blur, steam, dust or spray in the stills: it reads as speed and hides AI smoothness. - Keep crowds blurred and at the frame edges. In a 30 s take "there's funny business going on" in the background. ## 3. The prompt: one line, the moves, the speed, the end ``` the break dances in while everyone bobs their heads to the 90s hip hop beats. shaky handheld footage. 30 seconds. ``` ``` Kling 4 21:9 montage of the riding a scooter and pushing super fast through traffic. 30 seconds. No slow motion, everything is moving at a high speed with motion blur. ``` ``` montage of the doing BMX tricks on . tail whip. bar spin. Then he messes up the trick mid air and crashes to the ground. helps him up. she says "Sick run, want to go again?" 30 seconds. ``` - **Always say "No slow motion"** for speed. Kling 4 defaulted to slow motion in many first tests, and in our test a "no slow motion" ollie still floated for two seconds: give the peak and the landing as separate stills when timing matters. - Name the moves; don't describe them. Kling knows the tricks. - Put the spoken button line in quotes, last. - For a fixed order (moves → crash → line), use `multi_prompt` with seconds per shot (see `kling-4-prompting`). - To get a specific real move right, add a 3–30 s clip of it as `@Video1` ("the rider performs the trick from @Video1"). ## 4. Run it ```bash curl -s -X POST https://api.varg.ai/v2/tools/video/call -H "Authorization: Bearer $VARG_API_KEY" \ -H "Content-Type: application/json" -d '{ "model": "fal:fal-ai/kling-video/v4/reference-to-video", "prompt": "", "files": [{"url":"STILL_1"},{"url":"STILL_2"},{"url":"STILL_3"},{"url":"STILL_4"}], "aspect_ratio": "21:9", "resolution": "1080p", "duration": 30, "audio": true}' ``` Pin the reference route as above: with plain `kling_v4`, files go to image-to-video and only the first two are used (start and end frame). Price with `estimate_cost` / `POST /v2/estimate` on `"model": "kling_v4"` with the same duration and resolution. Draft at 720p first. ## 5. Pick the seconds Watch the take with the sound off first, the way the author did: mark each piece as usable or not ("bad dance, bad… that is good, that's a good go down… pretty good freeze"). Typical keep rate: a third of the take. - Keep moves that land and new angles Kling found ("that's a very cool angle, that's a new angle"). - Drop pieces with extra fingers, merged limbs, a board or bike that changes shape, or nonsense tricks ("that bar spin makes no sense"). - Shots that came from your stills look sharper than shots Kling invented; prefer them for the hero moments. - Cut on the action and join on the beat (`varg-music-video`), or keep the take's own sound for the crash and the line. ```bash ffmpeg -ss 4.2 -to 8.0 -i take.mp4 -c:v libx264 -crf 16 -c:a aac keep_01.mp4 ``` ## Tested 2026-10-30, our own scene: a skateboarder bombing a Lisbon hill, three `gpt_image_2_5` stills (push toward the camera, ollie over the tram rails, the stop at a viewpoint), a three-shot `multi_prompt` on the pinned reference route, 15 s, 720p, audio: 236 credits for the take, 68 for the stills. Order, look and character held; she says "Again?" at the end; the ollie floats and the board vanishes from her hand in the last shot. https://s3.varg.ai/files/72c55813-c0fa-4cf2-9f64-ec4f7ed0e7ae/file_9483ac202e90.mp4 (details in `kling-4-prompting/references/test-run.md`). ## Related skills `kling-4-prompting` (inputs, prompt rules, failure table), `kling-4-keyframe-film` (a whole film from several takes), `varg-character-design` (the rider or dancer), `varg-music-video` (cut the montage to a track), `varg-ai`.