Wan 2.1 Mocha

Wan 2.1 Mocha

Playground

MoCha is an end-to-end video character replacement system designed to swap a character in a source video with a new character (provided via reference images), without relying on explicit structural guidance (e.g., pose/depth maps) for every frame.

Features

MoCha

What is MoCha?

MoCha is an end-to-end video character replacement system designed to swap a character in a source video with a new character (provided via reference images), without relying on explicit structural guidance (e.g., pose/depth maps) for every frame.

Pricing

Billing Rules

• Standard Rate: $0.04 per second
• HD (720p) Rate: $0.08 per second (Double the Standard Rate)
• Minimum Charge: All videos are billed for a minimum of 5 seconds.
  • Standard: $0.20
  • HD (720p): $0.40
• Billing Cap: To ensure predictable costs, billing is capped at a maximum of 120 seconds (2 minutes).

How to Use (MoCha)

1. image – Upload a clear character photo. (Recommend using PNG and JPG formats, and avoid WEBP)
2. video – Upload the motion clip (pose/expressions come from here).
3. prompt (optional) – Brief rules, e.g., “preserve outfit; natural expression; no background changes.”
4. resolution – Pick 480p or 720p.
5. Generate – Wait a moment for results.
6. Review & iterate – Fix a seed to reproduce; change seed for A/B variants.

Tips

• Match composition & pose: Keep the reference image and target video aligned in composition, camera position, and human body pose to reduce failure rates.
• Keep aspect ratios the same: Use the same aspect ratio for the input image and video for best results.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/wan-2.1/mocha" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "resolution": "480p",
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"