sora-2-pro (text to video)

curl -X POST "https://gptproto.com/api/v3/openai/sora-2/text-to-video-pro" \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "A video of a horse dancing.",
  "size": "720*1280",
  "duration": 4
}'

{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}