Long Video Face Swap
WaveSpeed supports long-form video face swap without length restrictions. Pay per second of processed video.
This query is less about “no rules” and more about lower friction.
When people type this phrase, they are usually looking for a tool that gets to a usable image faster. The label is secondary. The workflow is the real product.
Most users really want broader style range, faster iteration, and fewer dead ends before the first promising draft.
What to compare before you choose.
If you compare workflow instead of marketing copy, the evaluation gets much clearer.
Some models follow instructions better than others.
Clearer outputs, fewer ignored details.
You may want realism, art, or concept work.
More than one visual mode.
Text-only tools can feel random.
Uploads, editing, or image-to-image paths.
Many users want to test before committing.
Easy first use, less setup.
WaveSpeed fits better when you want to move between modes, not stay trapped in one.
That is the real advantage for this query: you can move from quick draft to prompt control to reference-based editing without rebuilding your process each time.
Fast image models
Good when you want many drafts fast and need to pressure-test loose ideas before polishing.
Prompt-focused models
Better when the prompt needs to be followed closely and small wording changes matter.
Editing models
Useful for reference-based work, variation passes, and controlled style shifts.
Image-to-image paths
Helpful when you already have a visual baseline and want tighter control over outcomes.
Let the image story keep moving.
Since this page already has a lot of visual material, a looping gallery works better than leaving every image trapped in its own static block. It gives the page a rhythm and helps people understand the range faster.
Test range with prompts that actually expose differences.
Simple prompts hide too much. Use scenes that reveal style range, structure, and prompt adherence.
A cinematic portrait with soft rim light and a blue background.
A futuristic city at sunrise, wide angle, highly detailed.
A product mockup on a clean studio table with natural shadows.
A surreal poster with bold color contrast and sharp typography.
A reference image remix that keeps the pose but changes the style.
A luxury editorial still life with reflective metal, soft daylight, and minimalist staging.
Where this kind of tool works best.
This is especially useful when you want creative freedom but still care about consistency, speed, and being able to keep iterating without switching stacks.
You want a tool that can sketch fast, shift style quickly, and still give you a path into more controlled editing once the first draft is close.
Different models respond differently to the same prompt, which is exactly why the “best” tool for this search is often the platform that lets you compare instead of commit too early.
How to use it in three steps.
Start with an open-ended prompt
Enter a prompt or upload a reference image.
Switch models when the style drifts
Choose a model based on speed, editing, or prompt fidelity.
Move into reference or edit mode
Generate, review, and compare results until you find the direction you want.
FAQ
What is the maximum video length per job?+
10 minutes per individual API job. For videos longer than 10 minutes, split the content into segments and submit each segment separately. There is no hard limit on the total number of segments per project.
Does splitting affect face swap quality at the join points?+
It can, if you cut mid-motion. Split at scene transitions or natural pauses where the subject is relatively still. The last frame of one segment and the first frame of the next should be visually consistent. Cutting on a clean frame produces a clean merge.
What video formats are supported?+
MP4 is the confirmed supported format for the `video` parameter. For reference face images, use a clear front-facing photo in JPG or PNG format. Check the [WaveSpeed API docs](https://wavespeed.ai/docs) for any format updates.
How do I merge the segments after processing?+
Use FFmpeg or any standard video editing tool to concatenate the output files in order. WaveSpeed returns processed segments as standard MP4 files. A basic FFmpeg concat command works for most cases.
Does the model stay consistent across segments?+
Use the same reference face image and the same `target_index` for every segment in a project. The model processes each segment independently, so consistent inputs are the primary driver of consistent outputs across segment boundaries.
What does it cost to process a 60-minute video?+
3,600 seconds multiplied by $0.01 equals $36.00 total. Splitting into six 10-minute segments does not change the price. Verify current rates on the [WaveSpeed pricing page](https://wavespeed.ai/pricing).
What happens if one segment fails?+
If a segment job fails, you resubmit only that segment. Failed jobs are not billed for completed processing. Check the API response for error codes and refer to the [WaveSpeed API docs](https://wavespeed.ai/docs) for retry guidance and error handling details.
Is there a consent requirement?+
Yes. You must obtain clear consent from any individual whose face appears in the video before processing. Usage must comply with WaveSpeed's terms of service and applicable laws in your jurisdiction, including GDPR in the EU, CCPA in California, and emerging AI content regulations such as the EU AI Act. ---