Trailer intent · proof-safe conversion to a playable slice
Plan a MiniMax H3 game trailer, separate concept footage from gameplay, and build the promised Unreal vertical slice in SEELE AI.
Use MiniMax H3 to explore a short game-trailer concept with controlled visual, motion, audio, and title references. Divide the edit into concept shots, native gameplay captures, and factual cards before publishing. If the trailer promises a mechanic that does not yet exist, use the shot list to write a SEELE brief and generate the native Unreal 5 vertical slice. Replace concept shots with project captures when the build is ready, or label them clearly as concept footage.
Choose the prompt closest to the user job, review the prefilled scope, and generate the native project. Each prompt converts a video-model intent into input, state, objective, failure, restart, and an inspectable SEELE handoff.
Create a native Unreal 5 third-person action slice in an original storm-lit mountain fortress. The player crosses one courtyard, uses one dash ability to avoid two hazards, activates a beacon, escapes before a timer ends, can fail, and can restart immediately. Include browser preview, readable feedback, and a downloadable project.
Use this Unreal promptGenerate a compact Unreal 5 arena with one controllable character, one attack, one dodge, one enemy, victory, defeat, restart, and a cinematic entrance that returns control reliably. Keep scope suitable for repeatable gameplay capture and validate the full loop in browser preview.
Use this Unreal promptBuild an Unreal 5 exploration slice around an original colossal machine awakening in a desert ruin. The player restores three conduits, survives one environmental hazard, reaches the control platform, triggers completion, can fail, and can restart. Use original assets and prepare a native project for capture.
Use this Unreal promptCreate a native Unreal 5 hover-bike traversal slice through one neon industrial canyon with three gates, one boost mechanic, collision recovery, a finish state, timeout failure, instant restart, browser preview, and stable local project output.
Use this Unreal promptAn inspectable Unreal project rather than a rendered clip, prompt answer, or unsupported provider-integration claim.
A fast playable check for camera, controls, objective clarity, feedback, success, failure, and restart before local continuation.
A workflow for performance review and package preparation before external distribution or platform submission.
A local handoff for source, Blueprints, assets, plugins, rights, build settings, target-device checks, and continued production.
H3 supports 4–15 second output, up to 2K, native stereo audio, multimodal references, first/last-frame control, reference generation, and editing. Those capabilities fit short trailer beats and visual exploration.
MiniMax highlights accurate text and brand rendering, but every title, logo, age-rating card, date, platform name, and legal line still needs frame-by-frame verification or deterministic post-production typography.
A concept shot can present tone, camera, or a hypothetical moment. Gameplay footage must come from a controllable build and should preserve the actual UI, input response, frame pacing, and state visible to the player.
Trailer viewers reveal demand for a fantasy. SEELE converts that demand into a native Unreal proof: a small playable scene matching the core mechanic, not a second round of passive video.
For every shot, state the audience takeaway and the evidence source: H3 concept, Unreal gameplay capture, cinematic capture from the real project, or factual title card. Remove any shot whose source cannot support its implied claim.
Use H3 for original mood, transition, camera, motion, or audio studies. Keep prompts free of third-party characters and trademarks, constrain duration and composition, and preserve input rights and generation receipts.
Translate the central trailer beat into player input, environment, state changes, objective, feedback, failure, success, and restart. Submit the brief to SEELE and generate the native Unreal 5 project.
Play the browser preview and local build, fix mismatches, then capture the native project with the intended resolution, frame rate, UI state, and settings. Record revision and capture configuration.
Keep concept footage distinguishable, verify every word and sound cue, match claims to the build, and obtain legal, platform, accessibility, and marketing approval before release.
Concept footage can be mistaken for gameplay even when the copy avoids the word.
Generated titles or logos can drift across frames and create false or unusable brand material.
A trailer can promise scale, enemies, destruction, multiplayer, or traversal that the build cannot deliver.
Publishing before rights and platform review can turn a good concept into a takedown or trust failure.
| Dimension | What good looks like | Evidence to keep |
|---|---|---|
| Hook | The opening communicates the player fantasy without a false gameplay claim | Shot source and claim note |
| Mechanic proof | At least one central promise is visible in a tested native build | Build capture with revision |
| Text and audio | Every word and sound is intentional, legible, owned, and accessible | Master script, captions, mix, and approvals |
| Conversion | Interested viewers have a real playable destination or project milestone | SEELE vertical-slice prompt and tested output |
Use deterministic save or level state, fixed settings, and named camera paths for native captures. A repeatable capture is easier to update when the project changes.
If UI is hidden for a cinematic beat, do not imply that the shot represents ordinary control. If UI appears, ensure it is the same functional state players receive.
Even when H3 renders convincing text, final dates, platform marks, legal lines, subtitles, and calls to action are safer as deterministic editorial layers.
The trailer page should not end at video generation. Route qualified visitors to build the small Unreal experience behind the promise, then use that project as the next evidence source.
Snapshot date: August 4, 2026. MiniMax’s July 31, 2026 release and current API documentation identify the API model as MiniMax-H3 and support H3’s video modes, duration, resolution, frame rate, multimodal references, audio, and dated pricing. They do not establish an Epic-supported Unreal integration or native game output. Epic documentation and the tested project remain authoritative for engine behavior.
First-party release positioning, H3 technologies, multimodal context, video and audio claims, editing, motion transfer, and target industries.
Open official announcementModel name, supported generation modes, 4–15 second duration, resolution, frame rate, aspect ratios, and reference inputs.
Re-check current output and reference-material pricing before spending. Use Epic documentation and the actual project for engine, asset, animation, UI, cinematic, build, and package decisions.
Use MiniMax H3 for cinematic previs, then rebuild approved shots in Unreal Sequencer with controllable scenes, cameras, timing, and evidence.
Open this workflowExplore game UI motion with MiniMax H3, then rebuild approved states in Unreal UMG with functional input, accessibility, localization, and tests.
Open this workflowCompare MiniMax H3 and Seedance 2.5 on matched game-video tasks, then move the winning idea into a native Unreal 5 project in SEELE.
Open this workflowYou can use H3 for concept shots, camera ideas, transitions, motion, audio direction, and editing experiments. A truthful Unreal trailer should identify which shots are concept media and which come from the actual project. Native gameplay claims still require capture from a tested Unreal build. Confirm the current provider documentation before you lock a production decision.
Official documentation lists integer durations from 4 to 15 seconds per generated output. A longer trailer therefore needs multiple planned shots and an edit. Continuity, character identity, text, audio, camera direction, and rights should be reviewed across the assembled sequence, not only inside each clip. Treat the tested Unreal build, not the reference clip, as acceptance evidence.
No. If the clip was generated outside the playable build, label it as concept footage or cinematic concept. Use SEELE to build the promised mechanic, test the native Unreal project, and capture the real result before using gameplay language. Keep prompts, outputs, project versions, and review notes in the same decision log.
Choose the one trailer beat that best explains why the game is fun. Convert it into player perspective, input, mechanic, objective, feedback, success, failure, restart, environment boundary, and acceptance checks. Keep the prompt focused on the playable slice rather than reproducing the whole edit. Recheck rights, runtime behavior, performance, and packaging before any external release.
Treat generated text as a draft visual. Verify it frame by frame and replace final logos, dates, ratings, platform names, prices, disclaimers, and calls to action with approved deterministic typography. This avoids temporal drift, misspellings, and unsupported claims. Use the browser preview to reject weak interaction before deeper production work.
The visitor is already expressing interest in making or validating a game concept. Offer a concrete next step: use a prefilled prompt to generate the playable Unreal slice behind the trailer idea, inspect it in browser preview, and continue with the native project instead of generating another passive clip. Record the source clip separately from the native project and package evidence.
Use H3 to answer the video question. Use SEELE to generate the playable system: native Unreal project, browser preview, optimization and packaging path, and a downloadable handoff. Keep concept media and native evidence clearly separated.