Function generateWithFalAI

apps/sim/app/api/tools/video/route.ts:1171–1351

(
  apiKey: string,
  model: string,
  prompt: string,
  duration: number | undefined,
  aspectRatio: string | undefined,
  resolution: string | undefined,
  promptOptimizer: boolean | undefined,
  generateAudio: boolean | undefined,
  useHostedCostTracking: boolean,
  requestId: string,
  logger: ReturnType<typeof createLogger>
)

}

async function generateWithFalAI(
  apiKey: string,
  model: string,
  prompt: string,
  duration: number | undefined,
  aspectRatio: string | undefined,
  resolution: string | undefined,
  promptOptimizer: boolean | undefined,
  generateAudio: boolean | undefined,
  useHostedCostTracking: boolean,
  requestId: string,
  logger: ReturnType<typeof createLogger>
): Promise<{
  buffer: Buffer
  width: number
  height: number
  jobId: string
  duration: number
  falaiCost?: FalAICostMetadata
}> {
  logger.info(`[${requestId}] Starting Fal.ai generation with model: ${model}`)

  const modelConfig = FALAI_MODEL_CONFIGS[model]
  if (!modelConfig) {
    throw new Error(`Unknown Fal.ai model: ${model}`)
  }

  const requestBody: FalAIRequestBody = { prompt }
  const formattedDuration = formatFalAIDuration(modelConfig.durationFormat, duration)

  if (formattedDuration !== undefined) {
    requestBody.duration = formattedDuration
  }

  if (modelConfig.supportsAspectRatio && aspectRatio) {
    requestBody.aspect_ratio = aspectRatio
  }

  if (modelConfig.supportsResolution && resolution) {
    requestBody.resolution = resolution
  }

  if (modelConfig.supportsPromptOptimizer && promptOptimizer !== undefined) {
    requestBody.prompt_optimizer = promptOptimizer
  }

  if (modelConfig.supportsGenerateAudio && generateAudio !== undefined) {
    requestBody.generate_audio = generateAudio
  }

  const createResponse = await fetch(`https://queue.fal.run/${modelConfig.endpoint}`, {
    method: 'POST',
    headers: {
      Authorization: `Key ${apiKey}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(requestBody),
  })