Why AI Video Generation Fails

Separate a rejection from an unfinished job

A request that cannot start is different from a job that has started and is waiting for a provider. Before changing your prompt or purchasing more credits, read the displayed status and error. A pending job is not proof of a failure. Likewise, a file that finishes but contains an awkward hand is a completed generation with a creative defect, rather than an automatically failed job.

This guide describes SeaDance’s current user-facing rules. For the governing content and payment terms, read the acceptable-use policy, terms of service and refund policy. It does not provide a way around content screening. When a request is rejected, the goal is to submit permitted material or resolve a technical problem, depending on the message.

Prompt screening and content rejection

SeaDance checks prompts before debiting a new live generation. Content that is not allowed is refused. A temporary inability to complete the check also prevents the job from proceeding; that message should not be interpreted as proof that the prompt itself is prohibited. Read the distinction in the displayed error and wait before retrying a temporary service problem.

Uploaded images also need to pass the applicable checks before they can be used. A permitted text description does not make an unsuitable picture acceptable. Use images you are authorized to use and keep the intended scene within the published content policy. If you believe an ordinary request was rejected incorrectly, contact support with the error and a plain explanation of what you intended to create.

Check uploads before rewriting the scene

Supported uploads are JPEG, PNG and WebP, up to 10 MB per image. Export a genuine supported file rather than simply changing the filename extension. If your image exceeds the limit, resize or recompress it using your usual image software, then upload the new file. A corrupted or incomplete export may still fail even when its filename appears correct.

The image count must also match the selected model and mode. For example, Kling 3.0 accepts a single first frame in Image to Video; it cannot use another ending image. Other supported models accept a first frame and an optional last frame. Do not confuse endpoint images with appearance references. Re-upload a reference if it has become unavailable rather than repeatedly submitting the same stale selection.

Shorten overlong or contradictory prompts

Keep live generation prompts within 10,000 characters. For video, use at least 3 characters and provide an actual scene description. A long document pasted into the prompt can exceed the accepted input even when the visible creative request is short. Remove copied conversation, duplicated instructions and irrelevant production notes. The same practical upper limit also applies to image prompts.

For a compliant rewrite, describe the subject, setting, action and viewpoint in direct language. Replace “make a dramatic advertising masterpiece with everything from the notes above” with “A red ceramic cup sits on a wooden counter; warm window light reveals the glaze while the camera stays fixed.” This clarifies the creative task. It does not change whether prohibited subject matter is allowed.

When a request contains disallowed content, remove or change that content itself. Do not disguise it with coded wording, alternate spellings or indirect instructions. For an otherwise permitted scene, resolve contradictions such as a stationary camera that must also orbit the subject. Simpler instructions can improve clarity, but they do not guarantee approval or a particular visual result.

Provider errors and returned credits

A provider can fail after a job has been accepted. SeaDance’s failed-generation handling returns the credits charged for the failed job to the account balance, with protection against crediting the same failed job repeatedly. This is a generation-credit return, not an automatic refund of a subscription payment or card purchase. Those purchase questions are governed separately by the refund policy.

An uncertain submission may still be running even if an initial response was interrupted. Check the existing job rather than immediately starting replacements. There is no fixed refund-time promise in this guide. If the job is marked failed but the corresponding credits do not appear back in your balance, send support the job information and the error so the discrepancy can be investigated.

Dollar estimates allocate purchased credits at Basic monthly: $29.90 for 149 credits, approximately $0.2007 per credit. They are not separate checkout prices. New accounts start with 0 credits. Check pricing before submitting; each quote below covers one result.

Use a controlled retry

Before retrying, check your balance, the selected settings, upload readiness and the specific error. All SeaDance video outputs use 16:9, with 5, 10 or 15 seconds available at each model’s listed resolution. Select those values through the controls. Asking for an unavailable output in prose does not add a supported setting. See the duration and resolution guide for the current combinations.

If the failure was technical, keep a compliant prompt stable while fixing the upload or waiting for service recovery. If the completed output missed the brief, revise the specific creative problem and treat the next submission as a new generation. Use Seedance 2.0 Mini for a lower-credit sketch when its settings suit the task, and consult the video generator for supported model choices.

Frequently asked questions

Related articles

Credit and purchase rules · First and last frames · Clearer image-to-video prompts