AI Video Generator Guide: Choose a Model and Workflow

Direct answer: An AI video generator turns a written motion brief, with or without a starting image, into a short clip. On magicdoor.ai, the useful decision is not which model is universally best. It is which of Wan 3, Kling 3.0, or FLUX 3 has the duration, audio, resolution, and price settings your shot needs.

Fact-checked September 10, 2026. This guide covers category and model choice. Use the text-to-video guide for a prompt-only workflow, the image-to-video guide when a first frame already exists, and AI video generator pricing for exact cost arithmetic.

Choose the starting point first

Starting point	Use it when	What to prepare	Main limitation
Text only	The subject, framing, and look are still open	Subject, action, setting, camera, light, duration	More visual decisions are left to the model
One uploaded or saved image	You already have a useful subject or first frame	A clean image plus a motion-focused prompt	The image guides the first frame; exact preservation is not guaranteed

Both routes end in the same magicdoor.ai video workspace. Text-to-video omits the source image. Image-to-video attaches one uploaded or saved image and asks the model to animate from it.

Current model decision table

This is a capability-led comparison, not a quality ranking. No controlled benchmark was used to name a winner.

Model	Maximum duration	Resolution	Audio in magicdoor.ai	Distinct setting	Five-second starting quote
Wan 3	30 seconds	720p or 1080p	No generated-audio claim	Longest supported single clip	$0.25 at 720p
Kling 3.0	15 seconds	720p or 1080p	Optional generated audio	Silent and audio rates differ	$0.84 silent at 720p
FLUX 3	20 seconds	720p or 1080p	Optional generated audio	720p draft mode	$0.30 in 720p draft

All three support 16:9, 9:16, and 1:1 in the creator, plus durations in 5-second increments. Pick from those exposed controls. Provider documentation may describe more parameters, but that does not make those controls available in magicdoor.ai.

A practical selection workflow

Define one shot. Write one subject, one main action, one setting, and one camera instruction.
Choose text or image input. Use text while composition is flexible. Add a starting image when the opening composition matters.
Set the delivery shape. Choose 16:9, 9:16, or 1:1. For image inputs, this is an output setting, not a promise that every crop will preserve the source exactly.
Choose duration. Start with five seconds while testing the direction. Every retry is another charged run.
Choose model features. Use Wan when its 30-second ceiling matters, Kling when its audio toggle fits, or FLUX when its audio toggle or 720p draft setting fits.
Review the quote. Change duration, resolution, audio, or draft mode before spending if the quote is too high.

Prompt anatomy

Separate what appears from how it moves:

Close-up of a ceramic coffee cup on a walnut desk, steam curling upward, slow camera push-in, warm window light, shallow depth of field, calm premium product-film mood.

That gives the model a subject, action, camera instruction, setting, and look. For image-to-video, spend fewer words re-describing what is visible. Focus on subject motion, environmental motion, camera movement, and what should remain calm.

Cost before quality escalation

Five seconds is the cleanest comparison unit:

Wan 3: $0.25 at 720p or $0.50 at 1080p.
Kling 3.0: $0.84/$1.26 at 720p silent/audio, or $1.12/$1.68 at 1080p silent/audio.
FLUX 3: $0.30 in 720p draft, $0.85 at normal 720p, or $1.45 at 1080p. Its current price does not vary with audio.

Use the pricing hub to calculate longer clips. A failed creative direction still consumes a generation, so short exploration can matter more than immediately selecting the largest settings.

Troubleshooting the first run

Problem	Change one thing next
Too many events happen at once	Reduce the prompt to one subject and one main action
Camera movement fights subject motion	Keep one movement and remove the other
Image details drift	Ask for subtler motion and a calmer camera
The composition feels wrong	Return to text-to-video, or improve the first image
The quote is higher than expected	Check duration, resolution, Kling audio, or FLUX draft
Silent output was expected to speak	Use Kling 3.0 or FLUX 3 with generated audio enabled; do not expect it from Wan 3

Access, billing, and privacy

Only active or trialing subscribers can generate videos. The base subscription is $6/month and includes $1 in usage credit. Generations draw from included credit or account balance, and the complete quote appears before the run. Finished videos stay in the private library until deleted. Up to three jobs can have funds reserved concurrently.

The /videos route sends anonymous visitors to sign in, so the next step is an account-and-subscription workflow, not an anonymous generator.

Create a video

FAQ

Which AI video generators are available on magicdoor.ai?

magicdoor.ai currently offers Wan 3, Kling 3.0, and FLUX 3. Each accepts a text prompt and one optional uploaded or saved starting image, with 720p or 1080p output and 5-second duration increments.

Should I start an AI video with text or an image?

Start with text when the composition is still open. Start with an image when the subject, layout, or first frame already matters, while treating that image as guidance rather than a guarantee that every detail will stay unchanged.

How much does an AI video cost on magicdoor.ai?

Five-second quotes range from $0.25 for Wan 3 at 720p to $1.68 for Kling 3.0 at 1080p with generated audio. The exact quote appears before generation and is paid from included credit or account balance.

Sources

Accessed September 10, 2026.

magicdoor.ai pricing for the base subscription and included credit.
The current magicdoor.ai video model registry and quote logic for exposed controls, model limits, and customer prices.
Wan 3 official model page, Kling 3.0 official model page, and FLUX 3 official model page as supporting workflow and capability documentation. Provider-only controls and prices are not presented as magicdoor.ai features.