curl -X POST 'https://devapi.pika.art/generate/2.1/t2v' \
-H 'X-API-KEY: your_api_key' \
-H 'Content-Type: application/x-www-form-urlencoded' \
-H 'Accept: application/json' \
-d 'promptText=A beautiful sunset over mountains' \
-d 'negativePrompt=blurry, low quality' \
-d 'seed=12345'

{
  "video_id": "<string>"
}