Runway API v1 added POST gen4/act-two endpoint for Gen-4 Act-Two video creation with driving video and character reference.

Example

driving_assetId & character_assetId

driving_assetId

character_assetId

curl --location 'https://api.useapi.net/v1/runwayml/gen4/act-two' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--header 'Authorization: Bearer user:12345-…' \
--data-urlencode 'driving_assetId=…' \
--data-urlencode 'character_assetId=…' \
--data-urlencode 'body_control=true' \
--data-urlencode 'expression_intensity=2' \
--data-urlencode 'exploreMode=true' 

Result