7 AI game trailer generators and editors: workflow & costs

The right output depends on the trailer: a gameplay trailer should show what players actually do; an announcement teaser can spend more time establishing a world. Generating impressive footage is not the same as making an accurate, persuasive trailer.

Magic Hour publishes this guide and includes its own product in the comparison. Treat the recommendations as editorial guidance from a vendor, and verify the linked first-party product details and your own output requirements before choosing a tool.

Seven tools compared by the job they do

Magic Hour publishes this guide. The comparison uses official product documentation checked September 10, 2026. It recommends workflows, not an unsupported ranking of which generator makes the most realistic or “trailer-ready” output.

1. Magic Hour: storyboards and supporting shots from your game assets

Use Magic Hour's AI Storyboard Generator to plan shots before paying to animate them. For approved character or environment artwork, Image-to-Video is a more concrete starting point than asking a text prompt to reinvent the game's visual design. Use Text-to-Video for a shot that does not yet have a reference image.

Useful example: animate the mist and camera around an approved environment image for a clearly identified cinematic teaser. Review the result for changes to the architecture, character silhouette and recognizable props.

Guest text-to-video and image-to-video each offer three daily generations of three-second 480p video with audio. Free video has a watermark. Creator is $19 month to month or $144 annually; paid subscribers get commercial use and watermark-free exports. Model choices and account-tool limits differ from guest access.

Limit: generated shots still need selection, sound work and assembly. Magic Hour does not guarantee that generated footage preserves playable mechanics or automatically edits a finished gameplay trailer.

2. Google Flow: reference-guided shots and model-specific editing

Flow is Google's creation workspace, while Veo and Gemini Omni are models available within it. Depending on the model, you can work from text, first/last frames, reference assets or an uploaded video edit.

Useful example: use approved keyframes to guide the opening and closing composition of a cinematic shot. Check the selected model's supported inputs before preparing a large set of references.

Google's current credit documentation lists fifty daily credits, with additional monthly credits for subscribers. Veo 3.1 Lite costs ten credits per generation for non-Ultra users; Fast costs twenty. One request may produce multiple generations, each charged separately. Regional eligibility and availability still apply.

Limit: a generated or edited clip can change the scene. It should not stand in for an unaltered recording of a game mechanic. Keep Flow subscription credits separate from Gemini or Vertex AI API billing.

3. Runway: individual shots and separate editing tools

Runway Gen-4.5 supports text-to-video and image-to-video, with two-to-ten-second generations and 720p base output. Other Runway tools handle video editing; model generation and editing are different operations.

Useful example: generate a five-second establishing shot from approved artwork, then bring the accepted result into the trailer timeline. If you instead want to modify a recorded shot, choose a tool that explicitly accepts video input.

Gen-4.5 costs twelve credits per second and requires Standard or higher. A five-second attempt therefore uses sixty credits. See our Runway pricing breakdown for subscription and API distinctions.

Limit: editing with a generative model is not a guarantee that UI, character actions or animation timing remain identical. Preserve original gameplay when those details demonstrate the product.

4. Luma App: modifying a shot or directing a new one

Luma Ray3.2 supports new video generation and Modify workflows for existing clips. Choose Modify when the source motion is an important starting point; use supported keyframes when the composition matters.

Useful example: develop an alternative lighting treatment for a concept cinematic while retaining the source performance as a guide. Compare the result with the source rather than assuming every detail stayed fixed.

Ray3.2 generation does not create native audio; Modify can retain source audio. The current web pricing for a five-second 720p generation is one hundred credits, while ten seconds costs three hundred. Longer duration does not have a flat per-second price. Our Luma review separates generation, Modify, plans and API costs.

Limit: modifying a gameplay recording can change the visual evidence of what the game contains. Use an original capture for the gameplay demonstration and edited concept material where it is clearly appropriate.

5. Dreamina: Seedance 2.5 game-cinematic shots

Dreamina’s current game-trailer page presents a Seedance 2.5 workflow for game trailers, with reference-to-video and multimodal inputs. Use it for supporting cinematics built from approved character or environment assets, not as evidence of playable mechanics.

Useful example: supply an approved hero image, environment reference and a short shot brief for a five-second world reveal. Keep the game title, logo, release date and store copy out of the generated frame; add exact text during editing.

The public page provides a route into the product but does not establish one fixed ongoing free-credit allowance or a universal cost per accepted shot. Record the live model, settings and credit quote before each attempt, then include rejected generations in the project budget.

Limit: a cinematic model can invent UI, abilities, locations or character details that do not exist in the game. Label supporting cinematics appropriately and use original capture whenever the trailer is demonstrating gameplay.

6. Higgsfield: connect storyboards, references and video models

Higgsfield Canvas connects prompts, references, storyboard frames and current image or video models in a node-based workflow. Use it when the missing work spans several linked shots rather than one isolated generation.

Useful example: build an eight-frame storyboard from approved character and environment references, animate selected frames with a supported video model, and keep the graph as the record of which source fed each shot. Compare the accepted clips with the playable build before adding them to a trailer.

Building and connecting the Canvas graph is free; Higgsfield says credits are deducted when an image or video node generates, at the selected model's normal rate. Record the displayed charge, model and settings for every accepted and rejected attempt.

Limit: a connected workflow can improve organization, but it does not prove gameplay accuracy or guarantee consistent identity between models. Preserve original gameplay for mechanic claims and review generated shots against the approved references.

7. DaVinci Resolve: assemble the actual trailer

DaVinci Resolve combines timeline editing, color, effects and audio post-production. The free version is a practical place to cut recorded gameplay, arrange generated assets, add readable titles and mix the soundtrack. Studio is listed at $295 and includes additional AI and finishing features.

Useful example: cut three recorded gameplay moments into a sequence that shows the objective, the player's action and the result. Add a short cinematic asset only where it provides information the gameplay sequence does not.

Limit: Resolve's free editor does not include every Studio AI feature. You can still assemble a straightforward trailer without buying a generative-video subscription or those extra features. If you already have suitable gameplay captures, editing them may be the most useful next step.

A sample sixty-second game-trailer plan

This is an illustrative structure for a small adventure game, not a universal optimal length or a result from a published performance test. Replace the example with your actual mechanic and audience.

Use a storyboard to identify the missing shot before generating anything. “We need a five-second environment reveal” is actionable; “make the trailer more cinematic” can produce expensive filler.

For a separate announcement teaser, you can emphasize atmosphere more. Give it an appropriate label and keep the gameplay trailer easy to find. Do not imply that a generated battle, location or character ability exists in the playable build if it does not.

Prompts that produce a clearer production brief

Start with a planning prompt that constrains what the trailer may claim:

“Plan a sixty-second trailer for a puzzle adventure where players redirect light beams to unlock doors. Use the supplied gameplay clips as the evidence for every mechanic. List each shot, its duration, the player action it demonstrates and whether it needs a capture or a supporting cinematic asset. Do not invent combat, multiplayer, environments or abilities. End with one wishlist call to action.”

For an approved environment image, try a single-shot animation brief:

These are proposed prompts, not claims of generated results. Review all requested constraints in the downloaded clip. Add exact game titles and logos in the editor rather than relying on a video model to spell them correctly.

Budget for accepted shots, not just generated seconds

Suppose the trailer needs four five-second supporting shots. If you allow three attempts per shot, the production budget covers twelve generations and sixty generated seconds to deliver twenty accepted seconds. This is a planning allowance, not an observed success rate.

At the current published web rates:

• Runway Gen-4.5: twelve five-second attempts × sixty credits = 720 credits.
• Luma Ray3.2 at 720p: twelve five-second attempts × one hundred credits = 1,200 credits.
• Magic Hour: use the full tool's estimate for the selected model and settings. A free three-second preview is not a five-second final asset.

A real production example shows why iteration belongs in the budget: in its 2025 pirate-trailer case study, RetroStyle Games reports generating more than seven hundred pieces of footage before completing its edit. That is one team's reported project, not a typical retry rate or a current comparison of models.

The credit totals are not comparable dollar amounts. Add the required plan or top-up, commercial-use eligibility, soundtrack, export needs and editing time. Generate a single representative shot first; buy capacity for the rest only after the result meets the brief.

Prepare the trailer for Steam and social posts

Steam's official trailer guidance recommends putting a primarily gameplay trailer first and making the game understandable without audio. It notes that showing the in-game HUD can be useful. Lead with the player experience rather than a long logo sequence.

For a Steam upload, the documentation prefers 16:9, H.264 video and AAC audio, with source resolution up to 1920×1080 and supported frame rates including 30/29.97 and 60/59.94 fps. Follow the current upload guidance for your export. Check the processed store-page version before considering it finished.

Make a separate vertical cut for social posts. Reframe shots so the relevant action remains visible, shorten text and preview on a phone. Our aspect-ratio guide explains when to crop, fit or expand a shot; expanding generated scenery should not become a way to invent playable space in a gameplay demonstration.